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Finding the Third Proportional to 28,729 and 43,125

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Solution

The third proportional to 28,729 and 43,125 is: 64,734.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,729 : 43,125 = 43,125 : x
  2. Step 2: Convert to fraction form
    28,729/43,125 = 43,125/x
  3. Step 3: Cross multiply
    28,729x = 43,125 × 43,125
  4. Step 4: Simplify right side
    28,729x = 1,859,765,625
  5. Step 5: Solve for x
    x = 1,859,765,625/28,729
  6. Step 6: Final answer
    x = 64,734.78

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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.