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Finding the Third Proportional to 34,879 and 71,612

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Solution

The third proportional to 34,879 and 71,612 is: 147,030.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,879 : 71,612 = 71,612 : x
  2. Step 2: Convert to fraction form
    34,879/71,612 = 71,612/x
  3. Step 3: Cross multiply
    34,879x = 71,612 × 71,612
  4. Step 4: Simplify right side
    34,879x = 5,128,278,544
  5. Step 5: Solve for x
    x = 5,128,278,544/34,879
  6. Step 6: Final answer
    x = 147,030.55

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.