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Finding the Fourth Proportional to 89,797.28, 123,921.09 and 49,512.49

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Solution

The fourth proportional to 89,797.28, 123,921.09 and 49,512.49 is: 68,327.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,797.28 : 123,921.09 = 49,512.49 : x
  2. Step 2: Convert to fraction form
    89,797.28/123,921.09 = 49,512.49/x
  3. Step 3: Cross multiply
    89,797.28x = 123,921.09 × 49,512.49
  4. Step 4: Simplify right side
    89,797.28x = 6,135,641,768.14
  5. Step 5: Solve for x
    x = 6,135,641,768.14/89,797.28
  6. Step 6: Final answer
    x = 68,327.70

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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.