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Finding the Fourth Proportional to 57,246.80, 85,853.79 and 19,291.94

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Solution

The fourth proportional to 57,246.80, 85,853.79 and 19,291.94 is: 28,932.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,246.80 : 85,853.79 = 19,291.94 : x
  2. Step 2: Convert to fraction form
    57,246.80/85,853.79 = 19,291.94/x
  3. Step 3: Cross multiply
    57,246.80x = 85,853.79 × 19,291.94
  4. Step 4: Simplify right side
    57,246.80x = 1,656,285,736.18
  5. Step 5: Solve for x
    x = 1,656,285,736.18/57,246.80
  6. Step 6: Final answer
    x = 28,932.37

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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.