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Finding the Fourth Proportional to 79,481.88, 109,653.48 and 51,204

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Solution

The fourth proportional to 79,481.88, 109,653.48 and 51,204 is: 70,641.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,481.88 : 109,653.48 = 51,204 : x
  2. Step 2: Convert to fraction form
    79,481.88/109,653.48 = 51,204/x
  3. Step 3: Cross multiply
    79,481.88x = 109,653.48 × 51,204
  4. Step 4: Simplify right side
    79,481.88x = 5,614,696,789.92
  5. Step 5: Solve for x
    x = 5,614,696,789.92/79,481.88
  6. Step 6: Final answer
    x = 70,641.22

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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.