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Finding the Fourth Proportional to 55,732.80, 83,599.20 and 53,140.80

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Solution

The fourth proportional to 55,732.80, 83,599.20 and 53,140.80 is: 79,711.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,732.80 : 83,599.20 = 53,140.80 : x
  2. Step 2: Convert to fraction form
    55,732.80/83,599.20 = 53,140.80/x
  3. Step 3: Cross multiply
    55,732.80x = 83,599.20 × 53,140.80
  4. Step 4: Simplify right side
    55,732.80x = 4,442,528,367.36
  5. Step 5: Solve for x
    x = 4,442,528,367.36/55,732.80
  6. Step 6: Final answer
    x = 79,711.20

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