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Finding the Fourth Proportional to 89,797.39, 123,920.29 and 49,511.78

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Solution

The fourth proportional to 89,797.39, 123,920.29 and 49,511.78 is: 68,326.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,797.39 : 123,920.29 = 49,511.78 : x
  2. Step 2: Convert to fraction form
    89,797.39/123,920.29 = 49,511.78/x
  3. Step 3: Cross multiply
    89,797.39x = 123,920.29 × 49,511.78
  4. Step 4: Simplify right side
    89,797.39x = 6,135,514,322.04
  5. Step 5: Solve for x
    x = 6,135,514,322.04/89,797.39
  6. Step 6: Final answer
    x = 68,326.20

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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.