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Finding the Fourth Proportional to 101,861.30, 152,800.12 and 38,711.68

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Solution

The fourth proportional to 101,861.30, 152,800.12 and 38,711.68 is: 58,070.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,861.30 : 152,800.12 = 38,711.68 : x
  2. Step 2: Convert to fraction form
    101,861.30/152,800.12 = 38,711.68/x
  3. Step 3: Cross multiply
    101,861.30x = 152,800.12 × 38,711.68
  4. Step 4: Simplify right side
    101,861.30x = 5,915,149,349.40
  5. Step 5: Solve for x
    x = 5,915,149,349.40/101,861.30
  6. Step 6: Final answer
    x = 58,070.62

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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.