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Finding the Fourth Proportional to 79,257.88, 109,375.88 and 43,447.12

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Solution

The fourth proportional to 79,257.88, 109,375.88 and 43,447.12 is: 59,957.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,257.88 : 109,375.88 = 43,447.12 : x
  2. Step 2: Convert to fraction form
    79,257.88/109,375.88 = 43,447.12/x
  3. Step 3: Cross multiply
    79,257.88x = 109,375.88 × 43,447.12
  4. Step 4: Simplify right side
    79,257.88x = 4,752,066,983.47
  5. Step 5: Solve for x
    x = 4,752,066,983.47/79,257.88
  6. Step 6: Final answer
    x = 59,957.03

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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.