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Finding the Third Proportional to 47,121 and 100,779

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Solution

The third proportional to 47,121 and 100,779 is: 215,538.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,121 : 100,779 = 100,779 : x
  2. Step 2: Convert to fraction form
    47,121/100,779 = 100,779/x
  3. Step 3: Cross multiply
    47,121x = 100,779 × 100,779
  4. Step 4: Simplify right side
    47,121x = 10,156,406,841
  5. Step 5: Solve for x
    x = 10,156,406,841/47,121
  6. Step 6: Final answer
    x = 215,538.86

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.