Home / 87,799.28-131,711.60-28,620.32

Finding the Fourth Proportional to 87,799.28, 131,711.60 and 28,620.32

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Solution

The fourth proportional to 87,799.28, 131,711.60 and 28,620.32 is: 42,934.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,799.28 : 131,711.60 = 28,620.32 : x
  2. Step 2: Convert to fraction form
    87,799.28/131,711.60 = 28,620.32/x
  3. Step 3: Cross multiply
    87,799.28x = 131,711.60 × 28,620.32
  4. Step 4: Simplify right side
    87,799.28x = 3,769,628,139.71
  5. Step 5: Solve for x
    x = 3,769,628,139.71/87,799.28
  6. Step 6: Final answer
    x = 42,934.61

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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.