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Finding the Fourth Proportional to 79,538.92, 109,764.42 and 43,240.44

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Solution

The fourth proportional to 79,538.92, 109,764.42 and 43,240.44 is: 59,672.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,538.92 : 109,764.42 = 43,240.44 : x
  2. Step 2: Convert to fraction form
    79,538.92/109,764.42 = 43,240.44/x
  3. Step 3: Cross multiply
    79,538.92x = 109,764.42 × 43,240.44
  4. Step 4: Simplify right side
    79,538.92x = 4,746,261,817.14
  5. Step 5: Solve for x
    x = 4,746,261,817.14/79,538.92
  6. Step 6: Final answer
    x = 59,672.19

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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.