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Finding the Fourth Proportional to 79,719.60, 110,013.78 and 43,910.88

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Solution

The fourth proportional to 79,719.60, 110,013.78 and 43,910.88 is: 60,597.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,719.60 : 110,013.78 = 43,910.88 : x
  2. Step 2: Convert to fraction form
    79,719.60/110,013.78 = 43,910.88/x
  3. Step 3: Cross multiply
    79,719.60x = 110,013.78 × 43,910.88
  4. Step 4: Simplify right side
    79,719.60x = 4,830,801,891.93
  5. Step 5: Solve for x
    x = 4,830,801,891.93/79,719.60
  6. Step 6: Final answer
    x = 60,597.42

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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.