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Finding the Third Proportional to 36,171 and 78,356

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Solution

The third proportional to 36,171 and 78,356 is: 169,739.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,171 : 78,356 = 78,356 : x
  2. Step 2: Convert to fraction form
    36,171/78,356 = 78,356/x
  3. Step 3: Cross multiply
    36,171x = 78,356 × 78,356
  4. Step 4: Simplify right side
    36,171x = 6,139,662,736
  5. Step 5: Solve for x
    x = 6,139,662,736/36,171
  6. Step 6: Final answer
    x = 169,739.92

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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.