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Finding the Fourth Proportional to 68,972.80, 103,382.40 and 29,523.20

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Solution

The fourth proportional to 68,972.80, 103,382.40 and 29,523.20 is: 44,251.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,972.80 : 103,382.40 = 29,523.20 : x
  2. Step 2: Convert to fraction form
    68,972.80/103,382.40 = 29,523.20/x
  3. Step 3: Cross multiply
    68,972.80x = 103,382.40 × 29,523.20
  4. Step 4: Simplify right side
    68,972.80x = 3,052,179,271.68
  5. Step 5: Solve for x
    x = 3,052,179,271.68/68,972.80
  6. Step 6: Final answer
    x = 44,251.93

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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.