Home / 87,712.32-131,575.68-28,532.64

Finding the Fourth Proportional to 87,712.32, 131,575.68 and 28,532.64

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Solution

The fourth proportional to 87,712.32, 131,575.68 and 28,532.64 is: 42,801.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,712.32 : 131,575.68 = 28,532.64 : x
  2. Step 2: Convert to fraction form
    87,712.32/131,575.68 = 28,532.64/x
  3. Step 3: Cross multiply
    87,712.32x = 131,575.68 × 28,532.64
  4. Step 4: Simplify right side
    87,712.32x = 3,754,201,510.20
  5. Step 5: Solve for x
    x = 3,754,201,510.20/87,712.32
  6. Step 6: Final answer
    x = 42,801.30

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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.