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Finding the Third Proportional to 48,031 and 77,172

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Solution

The third proportional to 48,031 and 77,172 is: 123,993.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,031 : 77,172 = 77,172 : x
  2. Step 2: Convert to fraction form
    48,031/77,172 = 77,172/x
  3. Step 3: Cross multiply
    48,031x = 77,172 × 77,172
  4. Step 4: Simplify right side
    48,031x = 5,955,517,584
  5. Step 5: Solve for x
    x = 5,955,517,584/48,031
  6. Step 6: Final answer
    x = 123,993.20

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.