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Finding the Fourth Proportional to 81,861.59, 122,839.46 and 34,472.95

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Solution

The fourth proportional to 81,861.59, 122,839.46 and 34,472.95 is: 51,729.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,861.59 : 122,839.46 = 34,472.95 : x
  2. Step 2: Convert to fraction form
    81,861.59/122,839.46 = 34,472.95/x
  3. Step 3: Cross multiply
    81,861.59x = 122,839.46 × 34,472.95
  4. Step 4: Simplify right side
    81,861.59x = 4,234,638,562.61
  5. Step 5: Solve for x
    x = 4,234,638,562.61/81,861.59
  6. Step 6: Final answer
    x = 51,729.25

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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.