Home / 57,286.78-85,909.64-19,836.79

Finding the Fourth Proportional to 57,286.78, 85,909.64 and 19,836.79

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Solution

The fourth proportional to 57,286.78, 85,909.64 and 19,836.79 is: 29,748.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,286.78 : 85,909.64 = 19,836.79 : x
  2. Step 2: Convert to fraction form
    57,286.78/85,909.64 = 19,836.79/x
  3. Step 3: Cross multiply
    57,286.78x = 85,909.64 × 19,836.79
  4. Step 4: Simplify right side
    57,286.78x = 1,704,171,173.70
  5. Step 5: Solve for x
    x = 1,704,171,173.70/57,286.78
  6. Step 6: Final answer
    x = 29,748.07

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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.