Home / 85,613.37-128,441.97-50,104.59

Finding the Fourth Proportional to 85,613.37, 128,441.97 and 50,104.59

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Solution

The fourth proportional to 85,613.37, 128,441.97 and 50,104.59 is: 75,169.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,613.37 : 128,441.97 = 50,104.59 : x
  2. Step 2: Convert to fraction form
    85,613.37/128,441.97 = 50,104.59/x
  3. Step 3: Cross multiply
    85,613.37x = 128,441.97 × 50,104.59
  4. Step 4: Simplify right side
    85,613.37x = 6,435,532,245.64
  5. Step 5: Solve for x
    x = 6,435,532,245.64/85,613.37
  6. Step 6: Final answer
    x = 75,169.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.