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Finding the Fourth Proportional to 87,392.72, 131,265.72 and 52,398.80

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Solution

The fourth proportional to 87,392.72, 131,265.72 and 52,398.80 is: 78,704.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,392.72 : 131,265.72 = 52,398.80 : x
  2. Step 2: Convert to fraction form
    87,392.72/131,265.72 = 52,398.80/x
  3. Step 3: Cross multiply
    87,392.72x = 131,265.72 × 52,398.80
  4. Step 4: Simplify right side
    87,392.72x = 6,878,166,209.14
  5. Step 5: Solve for x
    x = 6,878,166,209.14/87,392.72
  6. Step 6: Final answer
    x = 78,704.11

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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.