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Finding the Fourth Proportional to 101,732.97, 140,393.16 and 56,412.87

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Solution

The fourth proportional to 101,732.97, 140,393.16 and 56,412.87 is: 77,850.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,732.97 : 140,393.16 = 56,412.87 : x
  2. Step 2: Convert to fraction form
    101,732.97/140,393.16 = 56,412.87/x
  3. Step 3: Cross multiply
    101,732.97x = 140,393.16 × 56,412.87
  4. Step 4: Simplify right side
    101,732.97x = 7,919,981,083.97
  5. Step 5: Solve for x
    x = 7,919,981,083.97/101,732.97
  6. Step 6: Final answer
    x = 77,850.68

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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.