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Finding the Fourth Proportional to 72,158.44, 108,239.56 and 34,198.82

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Solution

The fourth proportional to 72,158.44, 108,239.56 and 34,198.82 is: 51,299.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,158.44 : 108,239.56 = 34,198.82 : x
  2. Step 2: Convert to fraction form
    72,158.44/108,239.56 = 34,198.82/x
  3. Step 3: Cross multiply
    72,158.44x = 108,239.56 × 34,198.82
  4. Step 4: Simplify right side
    72,158.44x = 3,701,665,229.32
  5. Step 5: Solve for x
    x = 3,701,665,229.32/72,158.44
  6. Step 6: Final answer
    x = 51,299.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.