Finding the Fourth Proportional to 42,218,157.67, 58,231,023.17 and 38,744,712.99
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Solution
The fourth proportional to 42,218,157.67, 58,231,023.17 and 38,744,712.99 is: 53,440,140.55
Step by Step Solution
- Step 1: Write the proportion equation
42,218,157.67 : 58,231,023.17 = 38,744,712.99 : x - Step 2: Convert to fraction form
42,218,157.67/58,231,023.17 = 38,744,712.99/x - Step 3: Cross multiply
42,218,157.67x = 58,231,023.17 × 38,744,712.99 - Step 4: Simplify right side
42,218,157.67x = 2,256,144,279,859,905.50 - Step 5: Solve for x
x = 2,256,144,279,859,905.50/42,218,157.67 - Step 6: Final answer
x = 53,440,140.55
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.