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Finding the Fourth Proportional to 87,843.39, 131,750.10 and 31,672.32

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Solution

The fourth proportional to 87,843.39, 131,750.10 and 31,672.32 is: 47,503.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,843.39 : 131,750.10 = 31,672.32 : x
  2. Step 2: Convert to fraction form
    87,843.39/131,750.10 = 31,672.32/x
  3. Step 3: Cross multiply
    87,843.39x = 131,750.10 × 31,672.32
  4. Step 4: Simplify right side
    87,843.39x = 4,172,831,327.23
  5. Step 5: Solve for x
    x = 4,172,831,327.23/87,843.39
  6. Step 6: Final answer
    x = 47,503.08

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1.5x scale

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.