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Finding the Fourth Proportional to 73,722.88, 110,584.31 and 18,318.88

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Solution

The fourth proportional to 73,722.88, 110,584.31 and 18,318.88 is: 27,478.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,722.88 : 110,584.31 = 18,318.88 : x
  2. Step 2: Convert to fraction form
    73,722.88/110,584.31 = 18,318.88/x
  3. Step 3: Cross multiply
    73,722.88x = 110,584.31 × 18,318.88
  4. Step 4: Simplify right side
    73,722.88x = 2,025,780,704.77
  5. Step 5: Solve for x
    x = 2,025,780,704.77/73,722.88
  6. Step 6: Final answer
    x = 27,478.32

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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.