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Finding the Fourth Proportional to 66,617.75, 91,932.51 and 36,809.75

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Solution

The fourth proportional to 66,617.75, 91,932.51 and 36,809.75 is: 50,797.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,617.75 : 91,932.51 = 36,809.75 : x
  2. Step 2: Convert to fraction form
    66,617.75/91,932.51 = 36,809.75/x
  3. Step 3: Cross multiply
    66,617.75x = 91,932.51 × 36,809.75
  4. Step 4: Simplify right side
    66,617.75x = 3,384,012,709.97
  5. Step 5: Solve for x
    x = 3,384,012,709.97/66,617.75
  6. Step 6: Final answer
    x = 50,797.46

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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.