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Finding the Fourth Proportional to 35,785.92, 49,380.96 and 20,890.56

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Solution

The fourth proportional to 35,785.92, 49,380.96 and 20,890.56 is: 28,826.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,785.92 : 49,380.96 = 20,890.56 : x
  2. Step 2: Convert to fraction form
    35,785.92/49,380.96 = 20,890.56/x
  3. Step 3: Cross multiply
    35,785.92x = 49,380.96 × 20,890.56
  4. Step 4: Simplify right side
    35,785.92x = 1,031,595,907.74
  5. Step 5: Solve for x
    x = 1,031,595,907.74/35,785.92
  6. Step 6: Final answer
    x = 28,826.87

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