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Finding the Third Proportional to 55,670 and 86,217

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Solution

The third proportional to 55,670 and 86,217 is: 133,525.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,670 : 86,217 = 86,217 : x
  2. Step 2: Convert to fraction form
    55,670/86,217 = 86,217/x
  3. Step 3: Cross multiply
    55,670x = 86,217 × 86,217
  4. Step 4: Simplify right side
    55,670x = 7,433,371,089
  5. Step 5: Solve for x
    x = 7,433,371,089/55,670
  6. Step 6: Final answer
    x = 133,525.62

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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.