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Finding the Fourth Proportional to 57,018.05, 85,541.03 and 40,183.91

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Solution

The fourth proportional to 57,018.05, 85,541.03 and 40,183.91 is: 60,285.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,018.05 : 85,541.03 = 40,183.91 : x
  2. Step 2: Convert to fraction form
    57,018.05/85,541.03 = 40,183.91/x
  3. Step 3: Cross multiply
    57,018.05x = 85,541.03 × 40,183.91
  4. Step 4: Simplify right side
    57,018.05x = 3,437,372,422.20
  5. Step 5: Solve for x
    x = 3,437,372,422.20/57,018.05
  6. Step 6: Final answer
    x = 60,285.69

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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.