Home / 57,418.92-86,076.36-20,474.28

Finding the Fourth Proportional to 57,418.92, 86,076.36 and 20,474.28

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Solution

The fourth proportional to 57,418.92, 86,076.36 and 20,474.28 is: 30,692.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,418.92 : 86,076.36 = 20,474.28 : x
  2. Step 2: Convert to fraction form
    57,418.92/86,076.36 = 20,474.28/x
  3. Step 3: Cross multiply
    57,418.92x = 86,076.36 × 20,474.28
  4. Step 4: Simplify right side
    57,418.92x = 1,762,351,496.02
  5. Step 5: Solve for x
    x = 1,762,351,496.02/57,418.92
  6. Step 6: Final answer
    x = 30,692.87

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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.