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Finding the Fourth Proportional to 79,481.92, 109,685.28 and 43,672.64

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Solution

The fourth proportional to 79,481.92, 109,685.28 and 43,672.64 is: 60,268.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,481.92 : 109,685.28 = 43,672.64 : x
  2. Step 2: Convert to fraction form
    79,481.92/109,685.28 = 43,672.64/x
  3. Step 3: Cross multiply
    79,481.92x = 109,685.28 × 43,672.64
  4. Step 4: Simplify right side
    79,481.92x = 4,790,245,746.74
  5. Step 5: Solve for x
    x = 4,790,245,746.74/79,481.92
  6. Step 6: Final answer
    x = 60,268.37

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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.