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Finding the Third Proportional to 20,118 and 43,318

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Solution

The third proportional to 20,118 and 43,318 is: 93,272.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,118 : 43,318 = 43,318 : x
  2. Step 2: Convert to fraction form
    20,118/43,318 = 43,318/x
  3. Step 3: Cross multiply
    20,118x = 43,318 × 43,318
  4. Step 4: Simplify right side
    20,118x = 1,876,449,124
  5. Step 5: Solve for x
    x = 1,876,449,124/20,118
  6. Step 6: Final answer
    x = 93,272.15

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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.