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Finding the Fourth Proportional to 72,382.88, 99,891.24 and 40,552.04

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Solution

The fourth proportional to 72,382.88, 99,891.24 and 40,552.04 is: 55,963.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,382.88 : 99,891.24 = 40,552.04 : x
  2. Step 2: Convert to fraction form
    72,382.88/99,891.24 = 40,552.04/x
  3. Step 3: Cross multiply
    72,382.88x = 99,891.24 × 40,552.04
  4. Step 4: Simplify right side
    72,382.88x = 4,050,793,560.13
  5. Step 5: Solve for x
    x = 4,050,793,560.13/72,382.88
  6. Step 6: Final answer
    x = 55,963.42

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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.