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Finding the Fourth Proportional to 111,543.72, 167,272 and 40,449.48

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Solution

The fourth proportional to 111,543.72, 167,272 and 40,449.48 is: 60,658.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,543.72 : 167,272 = 40,449.48 : x
  2. Step 2: Convert to fraction form
    111,543.72/167,272 = 40,449.48/x
  3. Step 3: Cross multiply
    111,543.72x = 167,272 × 40,449.48
  4. Step 4: Simplify right side
    111,543.72x = 6,766,065,418.56
  5. Step 5: Solve for x
    x = 6,766,065,418.56/111,543.72
  6. Step 6: Final answer
    x = 60,658.42

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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.