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Finding the Fourth Proportional to 71,080.92, 106,643.28 and 51,135.48

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Solution

The fourth proportional to 71,080.92, 106,643.28 and 51,135.48 is: 76,718.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,080.92 : 106,643.28 = 51,135.48 : x
  2. Step 2: Convert to fraction form
    71,080.92/106,643.28 = 51,135.48/x
  3. Step 3: Cross multiply
    71,080.92x = 106,643.28 × 51,135.48
  4. Step 4: Simplify right side
    71,080.92x = 5,453,255,311.57
  5. Step 5: Solve for x
    x = 5,453,255,311.57/71,080.92
  6. Step 6: Final answer
    x = 76,718.97

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