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Finding the Third Proportional to 31,836.80 and 69,201.84

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Solution

The third proportional to 31,836.80 and 69,201.84 is: 150,420.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,836.80 : 69,201.84 = 69,201.84 : x
  2. Step 2: Convert to fraction form
    31,836.80/69,201.84 = 69,201.84/x
  3. Step 3: Cross multiply
    31,836.80x = 69,201.84 × 69,201.84
  4. Step 4: Simplify right side
    31,836.80x = 4,788,895,178.40
  5. Step 5: Solve for x
    x = 4,788,895,178.40/31,836.80
  6. Step 6: Final answer
    x = 150,420.13

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.