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In the context of Figure 4, the P50 cost is represented as âcâ dollars. The P50 estimate is one with equal chance of project overruns or underruns up till when the project scope can be finalised. The P90 value is an estimate of the project cost based on a 90% probability that the cost will not be exceeded.his arises as the P90 cost estimation was adopted at the early stage during project scoping. Had the P50 cost estimate been adopted, there would have been a deviation of $7 million between the actual ($69 million) and budgeted P50 figure ($62 million). The project would have been under-budgeted.
DEFINITION of 'Forward Price To Earnings-Forward P/E'. A measure of the price-to-earnings ratio (P/E) using forecasted earnings for the P/E calculation.While the earnings used are just an estimate and are not as reliable as current earnings data, there is still benefit in estimated P/E analysis.REAKING DOWN 'Forward Price To Earnings-Forward P/E'. The estimated P/E of a company is often used to compare current earnings to estimated future earnings. If earnings are expected to grow in the future, the estimated P/E will be lower than the current P/E.