Home / 57,806.42-86,716.57-20,358.75

Finding the Fourth Proportional to 57,806.42, 86,716.57 and 20,358.75

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Solution

The fourth proportional to 57,806.42, 86,716.57 and 20,358.75 is: 30,540.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,806.42 : 86,716.57 = 20,358.75 : x
  2. Step 2: Convert to fraction form
    57,806.42/86,716.57 = 20,358.75/x
  3. Step 3: Cross multiply
    57,806.42x = 86,716.57 × 20,358.75
  4. Step 4: Simplify right side
    57,806.42x = 1,765,440,969.49
  5. Step 5: Solve for x
    x = 1,765,440,969.49/57,806.42
  6. Step 6: Final answer
    x = 30,540.57

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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.