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Finding the Fourth Proportional to 71,872.44, 99,184.08 and 40,042.44

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Solution

The fourth proportional to 71,872.44, 99,184.08 and 40,042.44 is: 55,258.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,872.44 : 99,184.08 = 40,042.44 : x
  2. Step 2: Convert to fraction form
    71,872.44/99,184.08 = 40,042.44/x
  3. Step 3: Cross multiply
    71,872.44x = 99,184.08 × 40,042.44
  4. Step 4: Simplify right side
    71,872.44x = 3,971,572,572.36
  5. Step 5: Solve for x
    x = 3,971,572,572.36/71,872.44
  6. Step 6: Final answer
    x = 55,258.63

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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.