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Finding the Third Proportional to 54,821 and 80,287

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Solution

The third proportional to 54,821 and 80,287 is: 117,582.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,821 : 80,287 = 80,287 : x
  2. Step 2: Convert to fraction form
    54,821/80,287 = 80,287/x
  3. Step 3: Cross multiply
    54,821x = 80,287 × 80,287
  4. Step 4: Simplify right side
    54,821x = 6,446,002,369
  5. Step 5: Solve for x
    x = 6,446,002,369/54,821
  6. Step 6: Final answer
    x = 117,582.72

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.