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Finding the Third Proportional to 31,632 and 47,646

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Solution

The third proportional to 31,632 and 47,646 is: 71,767.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,632 : 47,646 = 47,646 : x
  2. Step 2: Convert to fraction form
    31,632/47,646 = 47,646/x
  3. Step 3: Cross multiply
    31,632x = 47,646 × 47,646
  4. Step 4: Simplify right side
    31,632x = 2,270,141,316
  5. Step 5: Solve for x
    x = 2,270,141,316/31,632
  6. Step 6: Final answer
    x = 71,767.24

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.