Home / 71,961.12-99,304.20-40,135.44

Finding the Fourth Proportional to 71,961.12, 99,304.20 and 40,135.44

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Solution

The fourth proportional to 71,961.12, 99,304.20 and 40,135.44 is: 55,385.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,961.12 : 99,304.20 = 40,135.44 : x
  2. Step 2: Convert to fraction form
    71,961.12/99,304.20 = 40,135.44/x
  3. Step 3: Cross multiply
    71,961.12x = 99,304.20 × 40,135.44
  4. Step 4: Simplify right side
    71,961.12x = 3,985,617,760.85
  5. Step 5: Solve for x
    x = 3,985,617,760.85/71,961.12
  6. Step 6: Final answer
    x = 55,385.71

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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.