Home / 81,128.25-111,987.78-61,043.52

Finding the Fourth Proportional to 81,128.25, 111,987.78 and 61,043.52

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Solution

The fourth proportional to 81,128.25, 111,987.78 and 61,043.52 is: 84,263.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,128.25 : 111,987.78 = 61,043.52 : x
  2. Step 2: Convert to fraction form
    81,128.25/111,987.78 = 61,043.52/x
  3. Step 3: Cross multiply
    81,128.25x = 111,987.78 × 61,043.52
  4. Step 4: Simplify right side
    81,128.25x = 6,836,128,288.19
  5. Step 5: Solve for x
    x = 6,836,128,288.19/81,128.25
  6. Step 6: Final answer
    x = 84,263.23

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