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Finding the Fourth Proportional to 57,571.52, 86,353.12 and 18,139.92

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Solution

The fourth proportional to 57,571.52, 86,353.12 and 18,139.92 is: 27,208.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,571.52 : 86,353.12 = 18,139.92 : x
  2. Step 2: Convert to fraction form
    57,571.52/86,353.12 = 18,139.92/x
  3. Step 3: Cross multiply
    57,571.52x = 86,353.12 × 18,139.92
  4. Step 4: Simplify right side
    57,571.52x = 1,566,438,688.55
  5. Step 5: Solve for x
    x = 1,566,438,688.55/57,571.52
  6. Step 6: Final answer
    x = 27,208.57

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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.