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Finding the Third Proportional to 28,908 and 39,132

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Solution

The third proportional to 28,908 and 39,132 is: 52,971.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,908 : 39,132 = 39,132 : x
  2. Step 2: Convert to fraction form
    28,908/39,132 = 39,132/x
  3. Step 3: Cross multiply
    28,908x = 39,132 × 39,132
  4. Step 4: Simplify right side
    28,908x = 1,531,313,424
  5. Step 5: Solve for x
    x = 1,531,313,424/28,908
  6. Step 6: Final answer
    x = 52,971.96

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.