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Finding the Fourth Proportional to 57,123.86, 85,706.30 and 25,531.29

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Solution

The fourth proportional to 57,123.86, 85,706.30 and 25,531.29 is: 38,306.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,123.86 : 85,706.30 = 25,531.29 : x
  2. Step 2: Convert to fraction form
    57,123.86/85,706.30 = 25,531.29/x
  3. Step 3: Cross multiply
    57,123.86x = 85,706.30 × 25,531.29
  4. Step 4: Simplify right side
    57,123.86x = 2,188,192,463.96
  5. Step 5: Solve for x
    x = 2,188,192,463.96/57,123.86
  6. Step 6: Final answer
    x = 38,306.11

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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.