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Finding the Fourth Proportional to 71,509.42, 98,683.68 and 39,681.28

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Solution

The fourth proportional to 71,509.42, 98,683.68 and 39,681.28 is: 54,760.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,509.42 : 98,683.68 = 39,681.28 : x
  2. Step 2: Convert to fraction form
    71,509.42/98,683.68 = 39,681.28/x
  3. Step 3: Cross multiply
    71,509.42x = 98,683.68 × 39,681.28
  4. Step 4: Simplify right side
    71,509.42x = 3,915,894,737.51
  5. Step 5: Solve for x
    x = 3,915,894,737.51/71,509.42
  6. Step 6: Final answer
    x = 54,760.54

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