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Finding the Third Proportional to 54,256 and 81,328

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Solution

The third proportional to 54,256 and 81,328 is: 121,908.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,256 : 81,328 = 81,328 : x
  2. Step 2: Convert to fraction form
    54,256/81,328 = 81,328/x
  3. Step 3: Cross multiply
    54,256x = 81,328 × 81,328
  4. Step 4: Simplify right side
    54,256x = 6,614,243,584
  5. Step 5: Solve for x
    x = 6,614,243,584/54,256
  6. Step 6: Final answer
    x = 121,908.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.