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Finding the Fourth Proportional to 54,578.06, 81,866.82 and 47,159.95

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Solution

The fourth proportional to 54,578.06, 81,866.82 and 47,159.95 is: 70,739.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,578.06 : 81,866.82 = 47,159.95 : x
  2. Step 2: Convert to fraction form
    54,578.06/81,866.82 = 47,159.95/x
  3. Step 3: Cross multiply
    54,578.06x = 81,866.82 × 47,159.95
  4. Step 4: Simplify right side
    54,578.06x = 3,860,835,137.86
  5. Step 5: Solve for x
    x = 3,860,835,137.86/54,578.06
  6. Step 6: Final answer
    x = 70,739.69

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