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Finding the Fourth Proportional to 90,830.80, 136,246.20 and 49,358.80

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Solution

The fourth proportional to 90,830.80, 136,246.20 and 49,358.80 is: 74,038.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,830.80 : 136,246.20 = 49,358.80 : x
  2. Step 2: Convert to fraction form
    90,830.80/136,246.20 = 49,358.80/x
  3. Step 3: Cross multiply
    90,830.80x = 136,246.20 × 49,358.80
  4. Step 4: Simplify right side
    90,830.80x = 6,724,948,936.56
  5. Step 5: Solve for x
    x = 6,724,948,936.56/90,830.80
  6. Step 6: Final answer
    x = 74,038.20

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