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Finding the Third Proportional to 31,237 and 66,937

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Solution

The third proportional to 31,237 and 66,937 is: 143,437.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,237 : 66,937 = 66,937 : x
  2. Step 2: Convert to fraction form
    31,237/66,937 = 66,937/x
  3. Step 3: Cross multiply
    31,237x = 66,937 × 66,937
  4. Step 4: Simplify right side
    31,237x = 4,480,561,969
  5. Step 5: Solve for x
    x = 4,480,561,969/31,237
  6. Step 6: Final answer
    x = 143,437.65

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.