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Finding the Fourth Proportional to 89,755.77, 123,857.40 and 49,469.87

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Solution

The fourth proportional to 89,755.77, 123,857.40 and 49,469.87 is: 68,265.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,755.77 : 123,857.40 = 49,469.87 : x
  2. Step 2: Convert to fraction form
    89,755.77/123,857.40 = 49,469.87/x
  3. Step 3: Cross multiply
    89,755.77x = 123,857.40 × 49,469.87
  4. Step 4: Simplify right side
    89,755.77x = 6,127,209,971.69
  5. Step 5: Solve for x
    x = 6,127,209,971.69/89,755.77
  6. Step 6: Final answer
    x = 68,265.36

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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.