Home / 87,805.92-131,709.60-31,685.76

Finding the Fourth Proportional to 87,805.92, 131,709.60 and 31,685.76

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Solution

The fourth proportional to 87,805.92, 131,709.60 and 31,685.76 is: 47,528.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,805.92 : 131,709.60 = 31,685.76 : x
  2. Step 2: Convert to fraction form
    87,805.92/131,709.60 = 31,685.76/x
  3. Step 3: Cross multiply
    87,805.92x = 131,709.60 × 31,685.76
  4. Step 4: Simplify right side
    87,805.92x = 4,173,318,775.30
  5. Step 5: Solve for x
    x = 4,173,318,775.30/87,805.92
  6. Step 6: Final answer
    x = 47,528.90

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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.