Home / 89,418.64-123,400.40-49,134.92

Finding the Fourth Proportional to 89,418.64, 123,400.40 and 49,134.92

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Solution

The fourth proportional to 89,418.64, 123,400.40 and 49,134.92 is: 67,807.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,418.64 : 123,400.40 = 49,134.92 : x
  2. Step 2: Convert to fraction form
    89,418.64/123,400.40 = 49,134.92/x
  3. Step 3: Cross multiply
    89,418.64x = 123,400.40 × 49,134.92
  4. Step 4: Simplify right side
    89,418.64x = 6,063,268,781.97
  5. Step 5: Solve for x
    x = 6,063,268,781.97/89,418.64
  6. Step 6: Final answer
    x = 67,807.66

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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.