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Finding the Fourth Proportional to 45,232.62, 67,827.36 and 20,272.87

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Solution

The fourth proportional to 45,232.62, 67,827.36 and 20,272.87 is: 30,399.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,232.62 : 67,827.36 = 20,272.87 : x
  2. Step 2: Convert to fraction form
    45,232.62/67,827.36 = 20,272.87/x
  3. Step 3: Cross multiply
    45,232.62x = 67,827.36 × 20,272.87
  4. Step 4: Simplify right side
    45,232.62x = 1,375,055,251.72
  5. Step 5: Solve for x
    x = 1,375,055,251.72/45,232.62
  6. Step 6: Final answer
    x = 30,399.64

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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.