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Finding the Third Proportional to 20,866 and 43,460

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Solution

The third proportional to 20,866 and 43,460 is: 90,519.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,866 : 43,460 = 43,460 : x
  2. Step 2: Convert to fraction form
    20,866/43,460 = 43,460/x
  3. Step 3: Cross multiply
    20,866x = 43,460 × 43,460
  4. Step 4: Simplify right side
    20,866x = 1,888,771,600
  5. Step 5: Solve for x
    x = 1,888,771,600/20,866
  6. Step 6: Final answer
    x = 90,519.10

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.