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Finding the Fourth Proportional to 54,960.84, 75,840.84 and 31,089.24

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Solution

The fourth proportional to 54,960.84, 75,840.84 and 31,089.24 is: 42,900.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,960.84 : 75,840.84 = 31,089.24 : x
  2. Step 2: Convert to fraction form
    54,960.84/75,840.84 = 31,089.24/x
  3. Step 3: Cross multiply
    54,960.84x = 75,840.84 × 31,089.24
  4. Step 4: Simplify right side
    54,960.84x = 2,357,834,076.56
  5. Step 5: Solve for x
    x = 2,357,834,076.56/54,960.84
  6. Step 6: Final answer
    x = 42,900.26

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