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Finding the Third Proportional to 54,672 and 81,656

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Solution

The third proportional to 54,672 and 81,656 is: 121,958.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,672 : 81,656 = 81,656 : x
  2. Step 2: Convert to fraction form
    54,672/81,656 = 81,656/x
  3. Step 3: Cross multiply
    54,672x = 81,656 × 81,656
  4. Step 4: Simplify right side
    54,672x = 6,667,702,336
  5. Step 5: Solve for x
    x = 6,667,702,336/54,672
  6. Step 6: Final answer
    x = 121,958.27

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.