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Finding the Fourth Proportional to 87,809.60, 131,714.40 and 52,731.20

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Solution

The fourth proportional to 87,809.60, 131,714.40 and 52,731.20 is: 79,096.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,809.60 : 131,714.40 = 52,731.20 : x
  2. Step 2: Convert to fraction form
    87,809.60/131,714.40 = 52,731.20/x
  3. Step 3: Cross multiply
    87,809.60x = 131,714.40 × 52,731.20
  4. Step 4: Simplify right side
    87,809.60x = 6,945,458,369.28
  5. Step 5: Solve for x
    x = 6,945,458,369.28/87,809.60
  6. Step 6: Final answer
    x = 79,096.80

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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.