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Finding the Third Proportional to 20,956 and 45,609

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Solution

The third proportional to 20,956 and 45,609 is: 99,264.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956 : 45,609 = 45,609 : x
  2. Step 2: Convert to fraction form
    20,956/45,609 = 45,609/x
  3. Step 3: Cross multiply
    20,956x = 45,609 × 45,609
  4. Step 4: Simplify right side
    20,956x = 2,080,180,881
  5. Step 5: Solve for x
    x = 2,080,180,881/20,956
  6. Step 6: Final answer
    x = 99,264.21

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.