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Finding the Fourth Proportional to 57,293.55, 85,919.74 and 19,843.54

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Solution

The fourth proportional to 57,293.55, 85,919.74 and 19,843.54 is: 29,758.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,293.55 : 85,919.74 = 19,843.54 : x
  2. Step 2: Convert to fraction form
    57,293.55/85,919.74 = 19,843.54/x
  3. Step 3: Cross multiply
    57,293.55x = 85,919.74 × 19,843.54
  4. Step 4: Simplify right side
    57,293.55x = 1,704,951,533.07
  5. Step 5: Solve for x
    x = 1,704,951,533.07/57,293.55
  6. Step 6: Final answer
    x = 29,758.18

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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.