Home / 81,724.32-112,780-45,915.84

Finding the Fourth Proportional to 81,724.32, 112,780 and 45,915.84

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Solution

The fourth proportional to 81,724.32, 112,780 and 45,915.84 is: 63,364.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,724.32 : 112,780 = 45,915.84 : x
  2. Step 2: Convert to fraction form
    81,724.32/112,780 = 45,915.84/x
  3. Step 3: Cross multiply
    81,724.32x = 112,780 × 45,915.84
  4. Step 4: Simplify right side
    81,724.32x = 5,178,388,435.20
  5. Step 5: Solve for x
    x = 5,178,388,435.20/81,724.32
  6. Step 6: Final answer
    x = 63,364.11

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