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Finding the Fourth Proportional to 65,728, 98,615.04 and 28,794.88

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Solution

The fourth proportional to 65,728, 98,615.04 and 28,794.88 is: 43,202.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,728 : 98,615.04 = 28,794.88 : x
  2. Step 2: Convert to fraction form
    65,728/98,615.04 = 28,794.88/x
  3. Step 3: Cross multiply
    65,728x = 98,615.04 × 28,794.88
  4. Step 4: Simplify right side
    65,728x = 2,839,608,243.00
  5. Step 5: Solve for x
    x = 2,839,608,243.00/65,728
  6. Step 6: Final answer
    x = 43,202.41

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.