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Finding the Fourth Proportional to 68,406.96, 102,617.52 and 18,487.32

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Solution

The fourth proportional to 68,406.96, 102,617.52 and 18,487.32 is: 27,732.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,406.96 : 102,617.52 = 18,487.32 : x
  2. Step 2: Convert to fraction form
    68,406.96/102,617.52 = 18,487.32/x
  3. Step 3: Cross multiply
    68,406.96x = 102,617.52 × 18,487.32
  4. Step 4: Simplify right side
    68,406.96x = 1,897,122,929.85
  5. Step 5: Solve for x
    x = 1,897,122,929.85/68,406.96
  6. Step 6: Final answer
    x = 27,732.89

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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.