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Finding the Third Proportional to 21,627 and 40,992.75

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Solution

The third proportional to 21,627 and 40,992.75 is: 77,699.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,627 : 40,992.75 = 40,992.75 : x
  2. Step 2: Convert to fraction form
    21,627/40,992.75 = 40,992.75/x
  3. Step 3: Cross multiply
    21,627x = 40,992.75 × 40,992.75
  4. Step 4: Simplify right side
    21,627x = 1,680,405,552.56
  5. Step 5: Solve for x
    x = 1,680,405,552.56/21,627
  6. Step 6: Final answer
    x = 77,699.43

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Why These Related Problems?

These problems maintain the same ratio (1.90) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.