Home / 90,067.12-124,291.46-49,781.64

Finding the Fourth Proportional to 90,067.12, 124,291.46 and 49,781.64

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Solution

The fourth proportional to 90,067.12, 124,291.46 and 49,781.64 is: 68,698.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,067.12 : 124,291.46 = 49,781.64 : x
  2. Step 2: Convert to fraction form
    90,067.12/124,291.46 = 49,781.64/x
  3. Step 3: Cross multiply
    90,067.12x = 124,291.46 × 49,781.64
  4. Step 4: Simplify right side
    90,067.12x = 6,187,432,716.79
  5. Step 5: Solve for x
    x = 6,187,432,716.79/90,067.12
  6. Step 6: Final answer
    x = 68,698.02

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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.