Home / 87,885.38-121,287.40-52,067.78

Finding the Fourth Proportional to 87,885.38, 121,287.40 and 52,067.78

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Solution

The fourth proportional to 87,885.38, 121,287.40 and 52,067.78 is: 71,856.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,885.38 : 121,287.40 = 52,067.78 : x
  2. Step 2: Convert to fraction form
    87,885.38/121,287.40 = 52,067.78/x
  3. Step 3: Cross multiply
    87,885.38x = 121,287.40 × 52,067.78
  4. Step 4: Simplify right side
    87,885.38x = 6,315,165,659.97
  5. Step 5: Solve for x
    x = 6,315,165,659.97/87,885.38
  6. Step 6: Final answer
    x = 71,856.84

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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.