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Finding the Fourth Proportional to 79,129.44, 109,198.44 and 43,319.44

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Solution

The fourth proportional to 79,129.44, 109,198.44 and 43,319.44 is: 59,780.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,129.44 : 109,198.44 = 43,319.44 : x
  2. Step 2: Convert to fraction form
    79,129.44/109,198.44 = 43,319.44/x
  3. Step 3: Cross multiply
    79,129.44x = 109,198.44 × 43,319.44
  4. Step 4: Simplify right side
    79,129.44x = 4,730,415,269.67
  5. Step 5: Solve for x
    x = 4,730,415,269.67/79,129.44
  6. Step 6: Final answer
    x = 59,780.72

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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.