Home / 89,424.13-123,404.89-49,137.78

Finding the Fourth Proportional to 89,424.13, 123,404.89 and 49,137.78

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Solution

The fourth proportional to 89,424.13, 123,404.89 and 49,137.78 is: 67,809.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,424.13 : 123,404.89 = 49,137.78 : x
  2. Step 2: Convert to fraction form
    89,424.13/123,404.89 = 49,137.78/x
  3. Step 3: Cross multiply
    89,424.13x = 123,404.89 × 49,137.78
  4. Step 4: Simplify right side
    89,424.13x = 6,063,842,335.74
  5. Step 5: Solve for x
    x = 6,063,842,335.74/89,424.13
  6. Step 6: Final answer
    x = 67,809.91

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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.