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Finding the Third Proportional to 36,084 and 78,719

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Solution

The third proportional to 36,084 and 78,719 is: 171,729.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,084 : 78,719 = 78,719 : x
  2. Step 2: Convert to fraction form
    36,084/78,719 = 78,719/x
  3. Step 3: Cross multiply
    36,084x = 78,719 × 78,719
  4. Step 4: Simplify right side
    36,084x = 6,196,680,961
  5. Step 5: Solve for x
    x = 6,196,680,961/36,084
  6. Step 6: Final answer
    x = 171,729.32

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.