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Finding the Fourth Proportional to 68,635.62, 102,920.49 and 29,171.34

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Solution

The fourth proportional to 68,635.62, 102,920.49 and 29,171.34 is: 43,743.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,635.62 : 102,920.49 = 29,171.34 : x
  2. Step 2: Convert to fraction form
    68,635.62/102,920.49 = 29,171.34/x
  3. Step 3: Cross multiply
    68,635.62x = 102,920.49 × 29,171.34
  4. Step 4: Simplify right side
    68,635.62x = 3,002,328,606.76
  5. Step 5: Solve for x
    x = 3,002,328,606.76/68,635.62
  6. Step 6: Final answer
    x = 43,743.01

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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.