Home / 66,391.20-91,618.67-36,176.78

Finding the Fourth Proportional to 66,391.20, 91,618.67 and 36,176.78

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Solution

The fourth proportional to 66,391.20, 91,618.67 and 36,176.78 is: 49,923.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,391.20 : 91,618.67 = 36,176.78 : x
  2. Step 2: Convert to fraction form
    66,391.20/91,618.67 = 36,176.78/x
  3. Step 3: Cross multiply
    66,391.20x = 91,618.67 × 36,176.78
  4. Step 4: Simplify right side
    66,391.20x = 3,314,468,787.97
  5. Step 5: Solve for x
    x = 3,314,468,787.97/66,391.20
  6. Step 6: Final answer
    x = 49,923.31

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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.