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Finding the Third Proportional to 29,721 and 43,670

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Solution

The third proportional to 29,721 and 43,670 is: 64,165.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,721 : 43,670 = 43,670 : x
  2. Step 2: Convert to fraction form
    29,721/43,670 = 43,670/x
  3. Step 3: Cross multiply
    29,721x = 43,670 × 43,670
  4. Step 4: Simplify right side
    29,721x = 1,907,068,900
  5. Step 5: Solve for x
    x = 1,907,068,900/29,721
  6. Step 6: Final answer
    x = 64,165.70

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.