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Finding the Third Proportional to 28,080 and 43,800

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Solution

The third proportional to 28,080 and 43,800 is: 68,320.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,080 : 43,800 = 43,800 : x
  2. Step 2: Convert to fraction form
    28,080/43,800 = 43,800/x
  3. Step 3: Cross multiply
    28,080x = 43,800 × 43,800
  4. Step 4: Simplify right side
    28,080x = 1,918,440,000
  5. Step 5: Solve for x
    x = 1,918,440,000/28,080
  6. Step 6: Final answer
    x = 68,320.51

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.