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Finding the Third Proportional to 19,879 and 43,370

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Solution

The third proportional to 19,879 and 43,370 is: 94,620.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,879 : 43,370 = 43,370 : x
  2. Step 2: Convert to fraction form
    19,879/43,370 = 43,370/x
  3. Step 3: Cross multiply
    19,879x = 43,370 × 43,370
  4. Step 4: Simplify right side
    19,879x = 1,880,956,900
  5. Step 5: Solve for x
    x = 1,880,956,900/19,879
  6. Step 6: Final answer
    x = 94,620.30

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.