Home / 55,771.20-83,260.80-53,438.40

Finding the Fourth Proportional to 55,771.20, 83,260.80 and 53,438.40

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Solution

The fourth proportional to 55,771.20, 83,260.80 and 53,438.40 is: 79,778.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,771.20 : 83,260.80 = 53,438.40 : x
  2. Step 2: Convert to fraction form
    55,771.20/83,260.80 = 53,438.40/x
  3. Step 3: Cross multiply
    55,771.20x = 83,260.80 × 53,438.40
  4. Step 4: Simplify right side
    55,771.20x = 4,449,323,934.72
  5. Step 5: Solve for x
    x = 4,449,323,934.72/55,771.20
  6. Step 6: Final answer
    x = 79,778.16

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