Finding the Fourth Proportional to 101,780.43, 140,465.61 and 56,472.99
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Solution
The fourth proportional to 101,780.43, 140,465.61 and 56,472.99 is: 77,937.51
Step by Step Solution
- Step 1: Write the proportion equation
101,780.43 : 140,465.61 = 56,472.99 : x - Step 2: Convert to fraction form
101,780.43/140,465.61 = 56,472.99/x - Step 3: Cross multiply
101,780.43x = 140,465.61 × 56,472.99 - Step 4: Simplify right side
101,780.43x = 7,932,512,988.87 - Step 5: Solve for x
x = 7,932,512,988.87/101,780.43 - Step 6: Final answer
x = 77,937.51
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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.