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Finding the Fourth Proportional to 90,831.30, 136,246.95 and 49,359.30

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Solution

The fourth proportional to 90,831.30, 136,246.95 and 49,359.30 is: 74,038.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,831.30 : 136,246.95 = 49,359.30 : x
  2. Step 2: Convert to fraction form
    90,831.30/136,246.95 = 49,359.30/x
  3. Step 3: Cross multiply
    90,831.30x = 136,246.95 × 49,359.30
  4. Step 4: Simplify right side
    90,831.30x = 6,725,054,079.14
  5. Step 5: Solve for x
    x = 6,725,054,079.14/90,831.30
  6. Step 6: Final answer
    x = 74,038.95

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