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Finding the Third Proportional to 31,976 and 48,405

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Solution

The third proportional to 31,976 and 48,405 is: 73,275.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,976 : 48,405 = 48,405 : x
  2. Step 2: Convert to fraction form
    31,976/48,405 = 48,405/x
  3. Step 3: Cross multiply
    31,976x = 48,405 × 48,405
  4. Step 4: Simplify right side
    31,976x = 2,343,044,025
  5. Step 5: Solve for x
    x = 2,343,044,025/31,976
  6. Step 6: Final answer
    x = 73,275.08

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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.