Home / 57,986.55-86,989.29-20,538.51

Finding the Fourth Proportional to 57,986.55, 86,989.29 and 20,538.51

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Solution

The fourth proportional to 57,986.55, 86,989.29 and 20,538.51 is: 30,811.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,986.55 : 86,989.29 = 20,538.51 : x
  2. Step 2: Convert to fraction form
    57,986.55/86,989.29 = 20,538.51/x
  3. Step 3: Cross multiply
    57,986.55x = 86,989.29 × 20,538.51
  4. Step 4: Simplify right side
    57,986.55x = 1,786,629,864.92
  5. Step 5: Solve for x
    x = 1,786,629,864.92/57,986.55
  6. Step 6: Final answer
    x = 30,811.11

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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.