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Finding the Fourth Proportional to 89,841, 123,981.17 and 49,555.85

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Solution

The fourth proportional to 89,841, 123,981.17 and 49,555.85 is: 68,387.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,841 : 123,981.17 = 49,555.85 : x
  2. Step 2: Convert to fraction form
    89,841/123,981.17 = 49,555.85/x
  3. Step 3: Cross multiply
    89,841x = 123,981.17 × 49,555.85
  4. Step 4: Simplify right side
    89,841x = 6,143,992,325.52
  5. Step 5: Solve for x
    x = 6,143,992,325.52/89,841
  6. Step 6: Final answer
    x = 68,387.40

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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.