Home / 57,337.20-85,991.40-20,392.56

Finding the Fourth Proportional to 57,337.20, 85,991.40 and 20,392.56

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Solution

The fourth proportional to 57,337.20, 85,991.40 and 20,392.56 is: 30,583.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,337.20 : 85,991.40 = 20,392.56 : x
  2. Step 2: Convert to fraction form
    57,337.20/85,991.40 = 20,392.56/x
  3. Step 3: Cross multiply
    57,337.20x = 85,991.40 × 20,392.56
  4. Step 4: Simplify right side
    57,337.20x = 1,753,584,783.98
  5. Step 5: Solve for x
    x = 1,753,584,783.98/57,337.20
  6. Step 6: Final answer
    x = 30,583.72

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1.5x scale

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.