Home / 66,190.75-91,340.99-37,890.97

Finding the Fourth Proportional to 66,190.75, 91,340.99 and 37,890.97

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Solution

The fourth proportional to 66,190.75, 91,340.99 and 37,890.97 is: 52,288.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,190.75 : 91,340.99 = 37,890.97 : x
  2. Step 2: Convert to fraction form
    66,190.75/91,340.99 = 37,890.97/x
  3. Step 3: Cross multiply
    66,190.75x = 91,340.99 × 37,890.97
  4. Step 4: Simplify right side
    66,190.75x = 3,460,998,711.86
  5. Step 5: Solve for x
    x = 3,460,998,711.86/66,190.75
  6. Step 6: Final answer
    x = 52,288.25

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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.