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Finding the Fourth Proportional to 68,881.68, 103,333.32 and 29,439

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Solution

The fourth proportional to 68,881.68, 103,333.32 and 29,439 is: 44,163.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,881.68 : 103,333.32 = 29,439 : x
  2. Step 2: Convert to fraction form
    68,881.68/103,333.32 = 29,439/x
  3. Step 3: Cross multiply
    68,881.68x = 103,333.32 × 29,439
  4. Step 4: Simplify right side
    68,881.68x = 3,042,029,607.48
  5. Step 5: Solve for x
    x = 3,042,029,607.48/68,881.68
  6. Step 6: Final answer
    x = 44,163.12

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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.