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Finding the Fourth Proportional to 73,315.80, 109,724.49 and 45,253.62

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Solution

The fourth proportional to 73,315.80, 109,724.49 and 45,253.62 is: 67,726.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,315.80 : 109,724.49 = 45,253.62 : x
  2. Step 2: Convert to fraction form
    73,315.80/109,724.49 = 45,253.62/x
  3. Step 3: Cross multiply
    73,315.80x = 109,724.49 × 45,253.62
  4. Step 4: Simplify right side
    73,315.80x = 4,965,430,375.15
  5. Step 5: Solve for x
    x = 4,965,430,375.15/73,315.80
  6. Step 6: Final answer
    x = 67,726.61

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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.