Home / 81,067.38-111,872.25-45,255.12

Finding the Fourth Proportional to 81,067.38, 111,872.25 and 45,255.12

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Solution

The fourth proportional to 81,067.38, 111,872.25 and 45,255.12 is: 62,451.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,067.38 : 111,872.25 = 45,255.12 : x
  2. Step 2: Convert to fraction form
    81,067.38/111,872.25 = 45,255.12/x
  3. Step 3: Cross multiply
    81,067.38x = 111,872.25 × 45,255.12
  4. Step 4: Simplify right side
    81,067.38x = 5,062,792,098.42
  5. Step 5: Solve for x
    x = 5,062,792,098.42/81,067.38
  6. Step 6: Final answer
    x = 62,451.66

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1.5x scale

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.