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Finding the Third Proportional to 31,560 and 68,041

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Solution

The third proportional to 31,560 and 68,041 is: 146,691.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,560 : 68,041 = 68,041 : x
  2. Step 2: Convert to fraction form
    31,560/68,041 = 68,041/x
  3. Step 3: Cross multiply
    31,560x = 68,041 × 68,041
  4. Step 4: Simplify right side
    31,560x = 4,629,577,681
  5. Step 5: Solve for x
    x = 4,629,577,681/31,560
  6. Step 6: Final answer
    x = 146,691.31

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.