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Finding the Fourth Proportional to 57,304.70, 85,958.11 and 19,865.99

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Solution

The fourth proportional to 57,304.70, 85,958.11 and 19,865.99 is: 29,799.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,304.70 : 85,958.11 = 19,865.99 : x
  2. Step 2: Convert to fraction form
    57,304.70/85,958.11 = 19,865.99/x
  3. Step 3: Cross multiply
    57,304.70x = 85,958.11 × 19,865.99
  4. Step 4: Simplify right side
    57,304.70x = 1,707,643,193.41
  5. Step 5: Solve for x
    x = 1,707,643,193.41/57,304.70
  6. Step 6: Final answer
    x = 29,799.36

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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.