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Finding the Third Proportional to 28,170 and 40,932

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Solution

The third proportional to 28,170 and 40,932 is: 59,475.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,170 : 40,932 = 40,932 : x
  2. Step 2: Convert to fraction form
    28,170/40,932 = 40,932/x
  3. Step 3: Cross multiply
    28,170x = 40,932 × 40,932
  4. Step 4: Simplify right side
    28,170x = 1,675,428,624
  5. Step 5: Solve for x
    x = 1,675,428,624/28,170
  6. Step 6: Final answer
    x = 59,475.63

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.