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Finding the Fourth Proportional to 71,943.78, 99,414.44 and 68,486.97

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Solution

The fourth proportional to 71,943.78, 99,414.44 and 68,486.97 is: 94,637.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,943.78 : 99,414.44 = 68,486.97 : x
  2. Step 2: Convert to fraction form
    71,943.78/99,414.44 = 68,486.97/x
  3. Step 3: Cross multiply
    71,943.78x = 99,414.44 × 68,486.97
  4. Step 4: Simplify right side
    71,943.78x = 6,808,593,769.85
  5. Step 5: Solve for x
    x = 6,808,593,769.85/71,943.78
  6. Step 6: Final answer
    x = 94,637.70

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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.