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Finding the Fourth Proportional to 76,209.75, 114,316.83 and 20,805.75

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Solution

The fourth proportional to 76,209.75, 114,316.83 and 20,805.75 is: 31,209.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,209.75 : 114,316.83 = 20,805.75 : x
  2. Step 2: Convert to fraction form
    76,209.75/114,316.83 = 20,805.75/x
  3. Step 3: Cross multiply
    76,209.75x = 114,316.83 × 20,805.75
  4. Step 4: Simplify right side
    76,209.75x = 2,378,447,385.77
  5. Step 5: Solve for x
    x = 2,378,447,385.77/76,209.75
  6. Step 6: Final answer
    x = 31,209.23

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