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Finding the Third Proportional to 31,888 and 69,376

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Solution

The third proportional to 31,888 and 69,376 is: 150,935.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,888 : 69,376 = 69,376 : x
  2. Step 2: Convert to fraction form
    31,888/69,376 = 69,376/x
  3. Step 3: Cross multiply
    31,888x = 69,376 × 69,376
  4. Step 4: Simplify right side
    31,888x = 4,813,029,376
  5. Step 5: Solve for x
    x = 4,813,029,376/31,888
  6. Step 6: Final answer
    x = 150,935.44

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.