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Finding the Fourth Proportional to 71,249.59, 106,839.87 and 29,112.94

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Solution

The fourth proportional to 71,249.59, 106,839.87 and 29,112.94 is: 43,655.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,249.59 : 106,839.87 = 29,112.94 : x
  2. Step 2: Convert to fraction form
    71,249.59/106,839.87 = 29,112.94/x
  3. Step 3: Cross multiply
    71,249.59x = 106,839.87 × 29,112.94
  4. Step 4: Simplify right side
    71,249.59x = 3,110,422,724.92
  5. Step 5: Solve for x
    x = 3,110,422,724.92/71,249.59
  6. Step 6: Final answer
    x = 43,655.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.