Home / 89,400.61-123,375.12-49,115.38

Finding the Fourth Proportional to 89,400.61, 123,375.12 and 49,115.38

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Solution

The fourth proportional to 89,400.61, 123,375.12 and 49,115.38 is: 67,780.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,400.61 : 123,375.12 = 49,115.38 : x
  2. Step 2: Convert to fraction form
    89,400.61/123,375.12 = 49,115.38/x
  3. Step 3: Cross multiply
    89,400.61x = 123,375.12 × 49,115.38
  4. Step 4: Simplify right side
    89,400.61x = 6,059,615,901.35
  5. Step 5: Solve for x
    x = 6,059,615,901.35/89,400.61
  6. Step 6: Final answer
    x = 67,780.48

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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.