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Finding the Fourth Proportional to 68,660.40, 102,990.60 and 24,288.60

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Solution

The fourth proportional to 68,660.40, 102,990.60 and 24,288.60 is: 36,432.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,660.40 : 102,990.60 = 24,288.60 : x
  2. Step 2: Convert to fraction form
    68,660.40/102,990.60 = 24,288.60/x
  3. Step 3: Cross multiply
    68,660.40x = 102,990.60 × 24,288.60
  4. Step 4: Simplify right side
    68,660.40x = 2,501,497,487.16
  5. Step 5: Solve for x
    x = 2,501,497,487.16/68,660.40
  6. Step 6: Final answer
    x = 36,432.90

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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.