Home / 87,742.80-121,084.68-47,456.61

Finding the Fourth Proportional to 87,742.80, 121,084.68 and 47,456.61

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Solution

The fourth proportional to 87,742.80, 121,084.68 and 47,456.61 is: 65,489.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,742.80 : 121,084.68 = 47,456.61 : x
  2. Step 2: Convert to fraction form
    87,742.80/121,084.68 = 47,456.61/x
  3. Step 3: Cross multiply
    87,742.80x = 121,084.68 × 47,456.61
  4. Step 4: Simplify right side
    87,742.80x = 5,746,268,435.73
  5. Step 5: Solve for x
    x = 5,746,268,435.73/87,742.80
  6. Step 6: Final answer
    x = 65,489.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.