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Finding the Third Proportional to 55,861 and 108,917

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Solution

The third proportional to 55,861 and 108,917 is: 212,364.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,861 : 108,917 = 108,917 : x
  2. Step 2: Convert to fraction form
    55,861/108,917 = 108,917/x
  3. Step 3: Cross multiply
    55,861x = 108,917 × 108,917
  4. Step 4: Simplify right side
    55,861x = 11,862,912,889
  5. Step 5: Solve for x
    x = 11,862,912,889/55,861
  6. Step 6: Final answer
    x = 212,364.85

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.