Home / 87,766.30-131,663.10-28,588.20

Finding the Fourth Proportional to 87,766.30, 131,663.10 and 28,588.20

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Solution

The fourth proportional to 87,766.30, 131,663.10 and 28,588.20 is: 42,886.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,766.30 : 131,663.10 = 28,588.20 : x
  2. Step 2: Convert to fraction form
    87,766.30/131,663.10 = 28,588.20/x
  3. Step 3: Cross multiply
    87,766.30x = 131,663.10 × 28,588.20
  4. Step 4: Simplify right side
    87,766.30x = 3,764,011,035.42
  5. Step 5: Solve for x
    x = 3,764,011,035.42/87,766.30
  6. Step 6: Final answer
    x = 42,886.75

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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.