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Finding the Fourth Proportional to 57,604.28, 79,489.86 and 31,761.68

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Solution

The fourth proportional to 57,604.28, 79,489.86 and 31,761.68 is: 43,828.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,604.28 : 79,489.86 = 31,761.68 : x
  2. Step 2: Convert to fraction form
    57,604.28/79,489.86 = 31,761.68/x
  3. Step 3: Cross multiply
    57,604.28x = 79,489.86 × 31,761.68
  4. Step 4: Simplify right side
    57,604.28x = 2,524,731,496.56
  5. Step 5: Solve for x
    x = 2,524,731,496.56/57,604.28
  6. Step 6: Final answer
    x = 43,828.89

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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.