Home / 90,434.01-135,679.25-54,449.91

Finding the Fourth Proportional to 90,434.01, 135,679.25 and 54,449.91

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Solution

The fourth proportional to 90,434.01, 135,679.25 and 54,449.91 is: 81,691.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,434.01 : 135,679.25 = 54,449.91 : x
  2. Step 2: Convert to fraction form
    90,434.01/135,679.25 = 54,449.91/x
  3. Step 3: Cross multiply
    90,434.01x = 135,679.25 × 54,449.91
  4. Step 4: Simplify right side
    90,434.01x = 7,387,722,679.12
  5. Step 5: Solve for x
    x = 7,387,722,679.12/90,434.01
  6. Step 6: Final answer
    x = 81,691.86

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1.5x scale

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.