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Finding the Fourth Proportional to 66,608, 99,912 and 17,360

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Solution

The fourth proportional to 66,608, 99,912 and 17,360 is: 26,040

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,608 : 99,912 = 17,360 : x
  2. Step 2: Convert to fraction form
    66,608/99,912 = 17,360/x
  3. Step 3: Cross multiply
    66,608x = 99,912 × 17,360
  4. Step 4: Simplify right side
    66,608x = 1,734,472,320
  5. Step 5: Solve for x
    x = 1,734,472,320/66,608
  6. Step 6: Final answer
    x = 26,040

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.