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Finding the Fourth Proportional to 66,135.25, 91,264.17 and 35,919.91

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Solution

The fourth proportional to 66,135.25, 91,264.17 and 35,919.91 is: 49,568.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,135.25 : 91,264.17 = 35,919.91 : x
  2. Step 2: Convert to fraction form
    66,135.25/91,264.17 = 35,919.91/x
  3. Step 3: Cross multiply
    66,135.25x = 91,264.17 × 35,919.91
  4. Step 4: Simplify right side
    66,135.25x = 3,278,200,772.62
  5. Step 5: Solve for x
    x = 3,278,200,772.62/66,135.25
  6. Step 6: Final answer
    x = 49,568.13

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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.