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Finding the Fourth Proportional to 67,540.17, 101,311.56 and 20,793

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Solution

The fourth proportional to 67,540.17, 101,311.56 and 20,793 is: 31,189.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,540.17 : 101,311.56 = 20,793 : x
  2. Step 2: Convert to fraction form
    67,540.17/101,311.56 = 20,793/x
  3. Step 3: Cross multiply
    67,540.17x = 101,311.56 × 20,793
  4. Step 4: Simplify right side
    67,540.17x = 2,106,571,267.08
  5. Step 5: Solve for x
    x = 2,106,571,267.08/67,540.17
  6. Step 6: Final answer
    x = 31,189.90

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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.