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Finding the Fourth Proportional to 67,080, 92,546.82 and 40,231.20

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Solution

The fourth proportional to 67,080, 92,546.82 and 40,231.20 is: 55,504.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,080 : 92,546.82 = 40,231.20 : x
  2. Step 2: Convert to fraction form
    67,080/92,546.82 = 40,231.20/x
  3. Step 3: Cross multiply
    67,080x = 92,546.82 × 40,231.20
  4. Step 4: Simplify right side
    67,080x = 3,723,269,624.78
  5. Step 5: Solve for x
    x = 3,723,269,624.78/67,080
  6. Step 6: Final answer
    x = 55,504.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.