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Finding the Third Proportional to 47,214 and 69,120

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Solution

The third proportional to 47,214 and 69,120 is: 101,189.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,214 : 69,120 = 69,120 : x
  2. Step 2: Convert to fraction form
    47,214/69,120 = 69,120/x
  3. Step 3: Cross multiply
    47,214x = 69,120 × 69,120
  4. Step 4: Simplify right side
    47,214x = 4,777,574,400
  5. Step 5: Solve for x
    x = 4,777,574,400/47,214
  6. Step 6: Final answer
    x = 101,189.78

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.