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Finding the Third Proportional to 30,448 and 65,720

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Solution

The third proportional to 30,448 and 65,720 is: 141,852.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,448 : 65,720 = 65,720 : x
  2. Step 2: Convert to fraction form
    30,448/65,720 = 65,720/x
  3. Step 3: Cross multiply
    30,448x = 65,720 × 65,720
  4. Step 4: Simplify right side
    30,448x = 4,319,118,400
  5. Step 5: Solve for x
    x = 4,319,118,400/30,448
  6. Step 6: Final answer
    x = 141,852.29

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.