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Finding the Fourth Proportional to 87,884.40, 131,729.40 and 48,469.80

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Solution

The fourth proportional to 87,884.40, 131,729.40 and 48,469.80 is: 72,651.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,884.40 : 131,729.40 = 48,469.80 : x
  2. Step 2: Convert to fraction form
    87,884.40/131,729.40 = 48,469.80/x
  3. Step 3: Cross multiply
    87,884.40x = 131,729.40 × 48,469.80
  4. Step 4: Simplify right side
    87,884.40x = 6,384,897,672.12
  5. Step 5: Solve for x
    x = 6,384,897,672.12/87,884.40
  6. Step 6: Final answer
    x = 72,651.09

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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.