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Finding the Third Proportional to 54,956 and 82,213

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Solution

The third proportional to 54,956 and 82,213 is: 122,988.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,956 : 82,213 = 82,213 : x
  2. Step 2: Convert to fraction form
    54,956/82,213 = 82,213/x
  3. Step 3: Cross multiply
    54,956x = 82,213 × 82,213
  4. Step 4: Simplify right side
    54,956x = 6,758,977,369
  5. Step 5: Solve for x
    x = 6,758,977,369/54,956
  6. Step 6: Final answer
    x = 122,988.89

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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.