Expected Profit based on Expected Revenue and Probabiliy?

Expected Profit based on Expected Revenue and Probabiliy?

I really like the expected revenue based on probability.  I think it's a realistic way to see the revenue pipeline based on what stage a potential is at.

i would, however, like to also create an "expected profit" based on probability too.  

example, i have a $100K potential with a 10% profit margin that is 50%.  The estimated revenue would be $50K thus the expected profit would now be $5K.  It would be a great way to quickly see a realistic free cash flow for the forecast report.  

Any ideas on how to create this?  Thanks in advance.