Home / 78,450.12-108,261.36-42,640.07

Finding the Fourth Proportional to 78,450.12, 108,261.36 and 42,640.07

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Solution

The fourth proportional to 78,450.12, 108,261.36 and 42,640.07 is: 58,843.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,450.12 : 108,261.36 = 42,640.07 : x
  2. Step 2: Convert to fraction form
    78,450.12/108,261.36 = 42,640.07/x
  3. Step 3: Cross multiply
    78,450.12x = 108,261.36 × 42,640.07
  4. Step 4: Simplify right side
    78,450.12x = 4,616,271,427.39
  5. Step 5: Solve for x
    x = 4,616,271,427.39/78,450.12
  6. Step 6: Final answer
    x = 58,843.40

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