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Finding the Fourth Proportional to 67,859.20, 101,635.20 and 40,211.20

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Solution

The fourth proportional to 67,859.20, 101,635.20 and 40,211.20 is: 60,225.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,859.20 : 101,635.20 = 40,211.20 : x
  2. Step 2: Convert to fraction form
    67,859.20/101,635.20 = 40,211.20/x
  3. Step 3: Cross multiply
    67,859.20x = 101,635.20 × 40,211.20
  4. Step 4: Simplify right side
    67,859.20x = 4,086,873,354.24
  5. Step 5: Solve for x
    x = 4,086,873,354.24/67,859.20
  6. Step 6: Final answer
    x = 60,225.78

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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.