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Finding the Third Proportional to 30,168 and 39,672

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Solution

The third proportional to 30,168 and 39,672 is: 52,170.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,168 : 39,672 = 39,672 : x
  2. Step 2: Convert to fraction form
    30,168/39,672 = 39,672/x
  3. Step 3: Cross multiply
    30,168x = 39,672 × 39,672
  4. Step 4: Simplify right side
    30,168x = 1,573,867,584
  5. Step 5: Solve for x
    x = 1,573,867,584/30,168
  6. Step 6: Final answer
    x = 52,170.10

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.