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Finding the Third Proportional to 31,674 and 68,208

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Solution

The third proportional to 31,674 and 68,208 is: 146,881.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,674 : 68,208 = 68,208 : x
  2. Step 2: Convert to fraction form
    31,674/68,208 = 68,208/x
  3. Step 3: Cross multiply
    31,674x = 68,208 × 68,208
  4. Step 4: Simplify right side
    31,674x = 4,652,331,264
  5. Step 5: Solve for x
    x = 4,652,331,264/31,674
  6. Step 6: Final answer
    x = 146,881.71

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.