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Finding the Third Proportional to 53,680 and 80,500

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Solution

The third proportional to 53,680 and 80,500 is: 120,720.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,680 : 80,500 = 80,500 : x
  2. Step 2: Convert to fraction form
    53,680/80,500 = 80,500/x
  3. Step 3: Cross multiply
    53,680x = 80,500 × 80,500
  4. Step 4: Simplify right side
    53,680x = 6,480,250,000
  5. Step 5: Solve for x
    x = 6,480,250,000/53,680
  6. Step 6: Final answer
    x = 120,720.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.