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Finding the Third Proportional to 43,440 and 69,108

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Solution

The third proportional to 43,440 and 69,108 is: 109,942.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,440 : 69,108 = 69,108 : x
  2. Step 2: Convert to fraction form
    43,440/69,108 = 69,108/x
  3. Step 3: Cross multiply
    43,440x = 69,108 × 69,108
  4. Step 4: Simplify right side
    43,440x = 4,775,915,664
  5. Step 5: Solve for x
    x = 4,775,915,664/43,440
  6. Step 6: Final answer
    x = 109,942.81

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.