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Finding the Fourth Proportional to 60,167.52, 90,245.52 and 20,719.20

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Solution

The fourth proportional to 60,167.52, 90,245.52 and 20,719.20 is: 31,076.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,167.52 : 90,245.52 = 20,719.20 : x
  2. Step 2: Convert to fraction form
    60,167.52/90,245.52 = 20,719.20/x
  3. Step 3: Cross multiply
    60,167.52x = 90,245.52 × 20,719.20
  4. Step 4: Simplify right side
    60,167.52x = 1,869,814,977.98
  5. Step 5: Solve for x
    x = 1,869,814,977.98/60,167.52
  6. Step 6: Final answer
    x = 31,076.82

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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.