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Finding the Third Proportional to 29,920 and 65,672

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Solution

The third proportional to 29,920 and 65,672 is: 144,144.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,920 : 65,672 = 65,672 : x
  2. Step 2: Convert to fraction form
    29,920/65,672 = 65,672/x
  3. Step 3: Cross multiply
    29,920x = 65,672 × 65,672
  4. Step 4: Simplify right side
    29,920x = 4,312,811,584
  5. Step 5: Solve for x
    x = 4,312,811,584/29,920
  6. Step 6: Final answer
    x = 144,144.77

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.