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Finding the Third Proportional to 54,287 and 117,856

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Solution

The third proportional to 54,287 and 117,856 is: 255,863.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,287 : 117,856 = 117,856 : x
  2. Step 2: Convert to fraction form
    54,287/117,856 = 117,856/x
  3. Step 3: Cross multiply
    54,287x = 117,856 × 117,856
  4. Step 4: Simplify right side
    54,287x = 13,890,036,736
  5. Step 5: Solve for x
    x = 13,890,036,736/54,287
  6. Step 6: Final answer
    x = 255,863.04

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.