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Finding the Third Proportional to 31,202.50 and 68,237

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Solution

The third proportional to 31,202.50 and 68,237 is: 149,228.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,202.50 : 68,237 = 68,237 : x
  2. Step 2: Convert to fraction form
    31,202.50/68,237 = 68,237/x
  3. Step 3: Cross multiply
    31,202.50x = 68,237 × 68,237
  4. Step 4: Simplify right side
    31,202.50x = 4,656,288,169
  5. Step 5: Solve for x
    x = 4,656,288,169/31,202.50
  6. Step 6: Final answer
    x = 149,228.05

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.