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Finding the Fourth Proportional to 66,282.19, 99,438.86 and 21,908.95

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Solution

The fourth proportional to 66,282.19, 99,438.86 and 21,908.95 is: 32,868.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,282.19 : 99,438.86 = 21,908.95 : x
  2. Step 2: Convert to fraction form
    66,282.19/99,438.86 = 21,908.95/x
  3. Step 3: Cross multiply
    66,282.19x = 99,438.86 × 21,908.95
  4. Step 4: Simplify right side
    66,282.19x = 2,178,600,776.89
  5. Step 5: Solve for x
    x = 2,178,600,776.89/66,282.19
  6. Step 6: Final answer
    x = 32,868.57

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