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Finding the Fourth Proportional to 57,325.55, 85,936.48 and 20,380.91

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Solution

The fourth proportional to 57,325.55, 85,936.48 and 20,380.91 is: 30,552.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,325.55 : 85,936.48 = 20,380.91 : x
  2. Step 2: Convert to fraction form
    57,325.55/85,936.48 = 20,380.91/x
  3. Step 3: Cross multiply
    57,325.55x = 85,936.48 × 20,380.91
  4. Step 4: Simplify right side
    57,325.55x = 1,751,463,183.96
  5. Step 5: Solve for x
    x = 1,751,463,183.96/57,325.55
  6. Step 6: Final answer
    x = 30,552.93

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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.