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Finding the Third Proportional to 36,720 and 79,152

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Solution

The third proportional to 36,720 and 79,152 is: 170,616.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,720 : 79,152 = 79,152 : x
  2. Step 2: Convert to fraction form
    36,720/79,152 = 79,152/x
  3. Step 3: Cross multiply
    36,720x = 79,152 × 79,152
  4. Step 4: Simplify right side
    36,720x = 6,265,039,104
  5. Step 5: Solve for x
    x = 6,265,039,104/36,720
  6. Step 6: Final answer
    x = 170,616.53

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.