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Finding the Fourth Proportional to 57,286.37, 79,048.71 and 31,786.11

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Solution

The fourth proportional to 57,286.37, 79,048.71 and 31,786.11 is: 43,861.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,286.37 : 79,048.71 = 31,786.11 : x
  2. Step 2: Convert to fraction form
    57,286.37/79,048.71 = 31,786.11/x
  3. Step 3: Cross multiply
    57,286.37x = 79,048.71 × 31,786.11
  4. Step 4: Simplify right side
    57,286.37x = 2,512,650,991.42
  5. Step 5: Solve for x
    x = 2,512,650,991.42/57,286.37
  6. Step 6: Final answer
    x = 43,861.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.