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Finding the Fourth Proportional to 79,425.72, 119,141.44 and 39,961.36

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Solution

The fourth proportional to 79,425.72, 119,141.44 and 39,961.36 is: 59,943.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,425.72 : 119,141.44 = 39,961.36 : x
  2. Step 2: Convert to fraction form
    79,425.72/119,141.44 = 39,961.36/x
  3. Step 3: Cross multiply
    79,425.72x = 119,141.44 × 39,961.36
  4. Step 4: Simplify right side
    79,425.72x = 4,761,053,974.76
  5. Step 5: Solve for x
    x = 4,761,053,974.76/79,425.72
  6. Step 6: Final answer
    x = 59,943.48

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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.