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Finding the Fourth Proportional to 74,115.80, 102,210.70 and 68,611.40

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Solution

The fourth proportional to 74,115.80, 102,210.70 and 68,611.40 is: 94,619.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,115.80 : 102,210.70 = 68,611.40 : x
  2. Step 2: Convert to fraction form
    74,115.80/102,210.70 = 68,611.40/x
  3. Step 3: Cross multiply
    74,115.80x = 102,210.70 × 68,611.40
  4. Step 4: Simplify right side
    74,115.80x = 7,012,819,221.98
  5. Step 5: Solve for x
    x = 7,012,819,221.98/74,115.80
  6. Step 6: Final answer
    x = 94,619.76

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