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Finding the Third Proportional to 15,055 and 31,729

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Solution

The third proportional to 15,055 and 31,729 is: 66,870.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,055 : 31,729 = 31,729 : x
  2. Step 2: Convert to fraction form
    15,055/31,729 = 31,729/x
  3. Step 3: Cross multiply
    15,055x = 31,729 × 31,729
  4. Step 4: Simplify right side
    15,055x = 1,006,729,441
  5. Step 5: Solve for x
    x = 1,006,729,441/15,055
  6. Step 6: Final answer
    x = 66,870.11

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.