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Finding the Fourth Proportional to 30,870.92, 42,601.83 and 16,723.82

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Solution

The fourth proportional to 30,870.92, 42,601.83 and 16,723.82 is: 23,078.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,870.92 : 42,601.83 = 16,723.82 : x
  2. Step 2: Convert to fraction form
    30,870.92/42,601.83 = 16,723.82/x
  3. Step 3: Cross multiply
    30,870.92x = 42,601.83 × 16,723.82
  4. Step 4: Simplify right side
    30,870.92x = 712,465,336.59
  5. Step 5: Solve for x
    x = 712,465,336.59/30,870.92
  6. Step 6: Final answer
    x = 23,078.85

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