Home / 87,992.10-121,397.28-57,793.80

Finding the Fourth Proportional to 87,992.10, 121,397.28 and 57,793.80

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Solution

The fourth proportional to 87,992.10, 121,397.28 and 57,793.80 is: 79,734.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,992.10 : 121,397.28 = 57,793.80 : x
  2. Step 2: Convert to fraction form
    87,992.10/121,397.28 = 57,793.80/x
  3. Step 3: Cross multiply
    87,992.10x = 121,397.28 × 57,793.80
  4. Step 4: Simplify right side
    87,992.10x = 7,016,010,120.86
  5. Step 5: Solve for x
    x = 7,016,010,120.86/87,992.10
  6. Step 6: Final answer
    x = 79,734.55

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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.