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Finding the Fourth Proportional to 87,978.60, 132,000.30 and 35,425.80

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Solution

The fourth proportional to 87,978.60, 132,000.30 and 35,425.80 is: 53,151.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,978.60 : 132,000.30 = 35,425.80 : x
  2. Step 2: Convert to fraction form
    87,978.60/132,000.30 = 35,425.80/x
  3. Step 3: Cross multiply
    87,978.60x = 132,000.30 × 35,425.80
  4. Step 4: Simplify right side
    87,978.60x = 4,676,216,227.74
  5. Step 5: Solve for x
    x = 4,676,216,227.74/87,978.60
  6. Step 6: Final answer
    x = 53,151.75

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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.