Finding the Fourth Proportional to 91,938.22, 137,929.47 and 31,957.99
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Solution
The fourth proportional to 91,938.22, 137,929.47 and 31,957.99 is: 47,944.68
Step by Step Solution
- Step 1: Write the proportion equation
91,938.22 : 137,929.47 = 31,957.99 : x - Step 2: Convert to fraction form
91,938.22/137,929.47 = 31,957.99/x - Step 3: Cross multiply
91,938.22x = 137,929.47 × 31,957.99 - Step 4: Simplify right side
91,938.22x = 4,407,948,622.97 - Step 5: Solve for x
x = 4,407,948,622.97/91,938.22 - Step 6: Final answer
x = 47,944.68
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.