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Finding the Fourth Proportional to 57,993.07, 86,986.86 and 20,552.53

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Solution

The fourth proportional to 57,993.07, 86,986.86 and 20,552.53 is: 30,827.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,993.07 : 86,986.86 = 20,552.53 : x
  2. Step 2: Convert to fraction form
    57,993.07/86,986.86 = 20,552.53/x
  3. Step 3: Cross multiply
    57,993.07x = 86,986.86 × 20,552.53
  4. Step 4: Simplify right side
    57,993.07x = 1,787,800,049.76
  5. Step 5: Solve for x
    x = 1,787,800,049.76/57,993.07
  6. Step 6: Final answer
    x = 30,827.82

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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.