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Finding the Third Proportional to 54,587 and 81,545

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Solution

The third proportional to 54,587 and 81,545 is: 121,816.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,587 : 81,545 = 81,545 : x
  2. Step 2: Convert to fraction form
    54,587/81,545 = 81,545/x
  3. Step 3: Cross multiply
    54,587x = 81,545 × 81,545
  4. Step 4: Simplify right side
    54,587x = 6,649,587,025
  5. Step 5: Solve for x
    x = 6,649,587,025/54,587
  6. Step 6: Final answer
    x = 121,816.31

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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.