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Finding the Fourth Proportional to 55,221.28, 76,205.84 and 30,070.80

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Solution

The fourth proportional to 55,221.28, 76,205.84 and 30,070.80 is: 41,497.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,221.28 : 76,205.84 = 30,070.80 : x
  2. Step 2: Convert to fraction form
    55,221.28/76,205.84 = 30,070.80/x
  3. Step 3: Cross multiply
    55,221.28x = 76,205.84 × 30,070.80
  4. Step 4: Simplify right side
    55,221.28x = 2,291,570,573.47
  5. Step 5: Solve for x
    x = 2,291,570,573.47/55,221.28
  6. Step 6: Final answer
    x = 41,497.96

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