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Finding the Third Proportional to 54,636 and 84,380

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Solution

The third proportional to 54,636 and 84,380 is: 130,316.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,636 : 84,380 = 84,380 : x
  2. Step 2: Convert to fraction form
    54,636/84,380 = 84,380/x
  3. Step 3: Cross multiply
    54,636x = 84,380 × 84,380
  4. Step 4: Simplify right side
    54,636x = 7,119,984,400
  5. Step 5: Solve for x
    x = 7,119,984,400/54,636
  6. Step 6: Final answer
    x = 130,316.72

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.