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Finding the Fourth Proportional to 89,305, 123,240.90 and 49,561

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Solution

The fourth proportional to 89,305, 123,240.90 and 49,561 is: 68,394.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,305 : 123,240.90 = 49,561 : x
  2. Step 2: Convert to fraction form
    89,305/123,240.90 = 49,561/x
  3. Step 3: Cross multiply
    89,305x = 123,240.90 × 49,561
  4. Step 4: Simplify right side
    89,305x = 6,107,942,244.90
  5. Step 5: Solve for x
    x = 6,107,942,244.90/89,305
  6. Step 6: Final answer
    x = 68,394.18

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.