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Finding the Fourth Proportional to 66,843.42, 92,235.17 and 39,976.13

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Solution

The fourth proportional to 66,843.42, 92,235.17 and 39,976.13 is: 55,161.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,843.42 : 92,235.17 = 39,976.13 : x
  2. Step 2: Convert to fraction form
    66,843.42/92,235.17 = 39,976.13/x
  3. Step 3: Cross multiply
    66,843.42x = 92,235.17 × 39,976.13
  4. Step 4: Simplify right side
    66,843.42x = 3,687,204,485.44
  5. Step 5: Solve for x
    x = 3,687,204,485.44/66,843.42
  6. Step 6: Final answer
    x = 55,161.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.