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Finding the Third Proportional to 31,844 and 69,220

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Solution

The third proportional to 31,844 and 69,220 is: 150,465.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,844 : 69,220 = 69,220 : x
  2. Step 2: Convert to fraction form
    31,844/69,220 = 69,220/x
  3. Step 3: Cross multiply
    31,844x = 69,220 × 69,220
  4. Step 4: Simplify right side
    31,844x = 4,791,408,400
  5. Step 5: Solve for x
    x = 4,791,408,400/31,844
  6. Step 6: Final answer
    x = 150,465.03

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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.