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Finding the Third Proportional to 43,360 and 66,120

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Solution

The third proportional to 43,360 and 66,120 is: 100,826.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,360 : 66,120 = 66,120 : x
  2. Step 2: Convert to fraction form
    43,360/66,120 = 66,120/x
  3. Step 3: Cross multiply
    43,360x = 66,120 × 66,120
  4. Step 4: Simplify right side
    43,360x = 4,371,854,400
  5. Step 5: Solve for x
    x = 4,371,854,400/43,360
  6. Step 6: Final answer
    x = 100,826.90

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.