Home / 57,806.61-86,716.85-20,358.93

Finding the Fourth Proportional to 57,806.61, 86,716.85 and 20,358.93

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Solution

The fourth proportional to 57,806.61, 86,716.85 and 20,358.93 is: 30,540.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,806.61 : 86,716.85 = 20,358.93 : x
  2. Step 2: Convert to fraction form
    57,806.61/86,716.85 = 20,358.93/x
  3. Step 3: Cross multiply
    57,806.61x = 86,716.85 × 20,358.93
  4. Step 4: Simplify right side
    57,806.61x = 1,765,462,177.18
  5. Step 5: Solve for x
    x = 1,765,462,177.18/57,806.61
  6. Step 6: Final answer
    x = 30,540.84

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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.