Home / 66,517.24-91,805.50-39,661.40

Finding the Fourth Proportional to 66,517.24, 91,805.50 and 39,661.40

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Solution

The fourth proportional to 66,517.24, 91,805.50 and 39,661.40 is: 54,739.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,517.24 : 91,805.50 = 39,661.40 : x
  2. Step 2: Convert to fraction form
    66,517.24/91,805.50 = 39,661.40/x
  3. Step 3: Cross multiply
    66,517.24x = 91,805.50 × 39,661.40
  4. Step 4: Simplify right side
    66,517.24x = 3,641,134,657.70
  5. Step 5: Solve for x
    x = 3,641,134,657.70/66,517.24
  6. Step 6: Final answer
    x = 54,739.71

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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.