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Finding the Fourth Proportional to 87,800.70, 131,701.05 and 43,458.60

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Solution

The fourth proportional to 87,800.70, 131,701.05 and 43,458.60 is: 65,187.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,800.70 : 131,701.05 = 43,458.60 : x
  2. Step 2: Convert to fraction form
    87,800.70/131,701.05 = 43,458.60/x
  3. Step 3: Cross multiply
    87,800.70x = 131,701.05 × 43,458.60
  4. Step 4: Simplify right side
    87,800.70x = 5,723,543,251.53
  5. Step 5: Solve for x
    x = 5,723,543,251.53/87,800.70
  6. Step 6: Final answer
    x = 65,187.90

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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.