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Finding the Third Proportional to 21,229 and 45,918

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Solution

The third proportional to 21,229 and 45,918 is: 99,319.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,229 : 45,918 = 45,918 : x
  2. Step 2: Convert to fraction form
    21,229/45,918 = 45,918/x
  3. Step 3: Cross multiply
    21,229x = 45,918 × 45,918
  4. Step 4: Simplify right side
    21,229x = 2,108,462,724
  5. Step 5: Solve for x
    x = 2,108,462,724/21,229
  6. Step 6: Final answer
    x = 99,319.93

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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.