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Finding the Third Proportional to 19,719 and 43,629

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Solution

The third proportional to 19,719 and 43,629 is: 96,530.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,719 : 43,629 = 43,629 : x
  2. Step 2: Convert to fraction form
    19,719/43,629 = 43,629/x
  3. Step 3: Cross multiply
    19,719x = 43,629 × 43,629
  4. Step 4: Simplify right side
    19,719x = 1,903,489,641
  5. Step 5: Solve for x
    x = 1,903,489,641/19,719
  6. Step 6: Final answer
    x = 96,530.74

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.