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Finding the Third Proportional to 54,681 and 81,735

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Solution

The third proportional to 54,681 and 81,735 is: 122,174.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,681 : 81,735 = 81,735 : x
  2. Step 2: Convert to fraction form
    54,681/81,735 = 81,735/x
  3. Step 3: Cross multiply
    54,681x = 81,735 × 81,735
  4. Step 4: Simplify right side
    54,681x = 6,680,610,225
  5. Step 5: Solve for x
    x = 6,680,610,225/54,681
  6. Step 6: Final answer
    x = 122,174.25

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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.