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Finding the Third Proportional to 38,819 and 51,117

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Solution

The third proportional to 38,819 and 51,117 is: 67,311.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,819 : 51,117 = 51,117 : x
  2. Step 2: Convert to fraction form
    38,819/51,117 = 51,117/x
  3. Step 3: Cross multiply
    38,819x = 51,117 × 51,117
  4. Step 4: Simplify right side
    38,819x = 2,612,947,689
  5. Step 5: Solve for x
    x = 2,612,947,689/38,819
  6. Step 6: Final answer
    x = 67,311.05

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.