For example, a model is having 5 nodes, where A is the dependent node and B, C, D, and E are the independent nodes (as shown in Figure 1). Now, if I know the probabilities of all independent nodes when A is 20%, 25%, 30%,.... up to 50% (as shown in Figure 2).

Can I find out the probabilities of all independent nodes for A is 70% or 80% or more?

If it is possible, then which algorithm or procedure I have to follow for getting the node A targeted value?

Thank you.