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Finding the Fourth Proportional to 87,225.12, 130,857 and 31,821.12

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Solution

The fourth proportional to 87,225.12, 130,857 and 31,821.12 is: 47,738.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,225.12 : 130,857 = 31,821.12 : x
  2. Step 2: Convert to fraction form
    87,225.12/130,857 = 31,821.12/x
  3. Step 3: Cross multiply
    87,225.12x = 130,857 × 31,821.12
  4. Step 4: Simplify right side
    87,225.12x = 4,164,016,299.84
  5. Step 5: Solve for x
    x = 4,164,016,299.84/87,225.12
  6. Step 6: Final answer
    x = 47,738.73

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