Home / 87,725.52-131,587.05-21,165.08

Finding the Fourth Proportional to 87,725.52, 131,587.05 and 21,165.08

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Solution

The fourth proportional to 87,725.52, 131,587.05 and 21,165.08 is: 31,747.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,725.52 : 131,587.05 = 21,165.08 : x
  2. Step 2: Convert to fraction form
    87,725.52/131,587.05 = 21,165.08/x
  3. Step 3: Cross multiply
    87,725.52x = 131,587.05 × 21,165.08
  4. Step 4: Simplify right side
    87,725.52x = 2,785,050,440.21
  5. Step 5: Solve for x
    x = 2,785,050,440.21/87,725.52
  6. Step 6: Final answer
    x = 31,747.32

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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.