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Finding the Third Proportional to 51,208 and 79,398

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Solution

The third proportional to 51,208 and 79,398 is: 123,106.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,208 : 79,398 = 79,398 : x
  2. Step 2: Convert to fraction form
    51,208/79,398 = 79,398/x
  3. Step 3: Cross multiply
    51,208x = 79,398 × 79,398
  4. Step 4: Simplify right side
    51,208x = 6,304,042,404
  5. Step 5: Solve for x
    x = 6,304,042,404/51,208
  6. Step 6: Final answer
    x = 123,106.59

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.