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Finding the Third Proportional to 13,779 and 29,979

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Solution

The third proportional to 13,779 and 29,979 is: 65,225.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,779 : 29,979 = 29,979 : x
  2. Step 2: Convert to fraction form
    13,779/29,979 = 29,979/x
  3. Step 3: Cross multiply
    13,779x = 29,979 × 29,979
  4. Step 4: Simplify right side
    13,779x = 898,740,441
  5. Step 5: Solve for x
    x = 898,740,441/13,779
  6. Step 6: Final answer
    x = 65,225.37

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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.