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Finding the Fourth Proportional to 86,472.23, 129,747.76 and 44,381.87

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Solution

The fourth proportional to 86,472.23, 129,747.76 and 44,381.87 is: 66,593.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,472.23 : 129,747.76 = 44,381.87 : x
  2. Step 2: Convert to fraction form
    86,472.23/129,747.76 = 44,381.87/x
  3. Step 3: Cross multiply
    86,472.23x = 129,747.76 × 44,381.87
  4. Step 4: Simplify right side
    86,472.23x = 5,758,448,430.53
  5. Step 5: Solve for x
    x = 5,758,448,430.53/86,472.23
  6. Step 6: Final answer
    x = 66,593.04

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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.