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Finding the Third Proportional to 54,502 and 84,421

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Solution

The third proportional to 54,502 and 84,421 is: 130,764.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,502 : 84,421 = 84,421 : x
  2. Step 2: Convert to fraction form
    54,502/84,421 = 84,421/x
  3. Step 3: Cross multiply
    54,502x = 84,421 × 84,421
  4. Step 4: Simplify right side
    54,502x = 7,126,905,241
  5. Step 5: Solve for x
    x = 7,126,905,241/54,502
  6. Step 6: Final answer
    x = 130,764.10

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.