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Finding the Fourth Proportional to 87,685.60, 131,560.80 and 35,132.80

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Solution

The fourth proportional to 87,685.60, 131,560.80 and 35,132.80 is: 52,712.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,685.60 : 131,560.80 = 35,132.80 : x
  2. Step 2: Convert to fraction form
    87,685.60/131,560.80 = 35,132.80/x
  3. Step 3: Cross multiply
    87,685.60x = 131,560.80 × 35,132.80
  4. Step 4: Simplify right side
    87,685.60x = 4,622,099,274.24
  5. Step 5: Solve for x
    x = 4,622,099,274.24/87,685.60
  6. Step 6: Final answer
    x = 52,712.18

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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.