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Finding the Third Proportional to 29,421 and 45,015

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Solution

The third proportional to 29,421 and 45,015 is: 68,874.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,421 : 45,015 = 45,015 : x
  2. Step 2: Convert to fraction form
    29,421/45,015 = 45,015/x
  3. Step 3: Cross multiply
    29,421x = 45,015 × 45,015
  4. Step 4: Simplify right side
    29,421x = 2,026,350,225
  5. Step 5: Solve for x
    x = 2,026,350,225/29,421
  6. Step 6: Final answer
    x = 68,874.28

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.