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Finding the Fourth Proportional to 81,862.84, 122,793.85 and 70,735.67

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Solution

The fourth proportional to 81,862.84, 122,793.85 and 70,735.67 is: 106,103.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,862.84 : 122,793.85 = 70,735.67 : x
  2. Step 2: Convert to fraction form
    81,862.84/122,793.85 = 70,735.67/x
  3. Step 3: Cross multiply
    81,862.84x = 122,793.85 × 70,735.67
  4. Step 4: Simplify right side
    81,862.84x = 8,685,905,251.63
  5. Step 5: Solve for x
    x = 8,685,905,251.63/81,862.84
  6. Step 6: Final answer
    x = 106,103.15

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