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Finding the Fourth Proportional to 81,583.66, 122,375.49 and 28,995.22

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Solution

The fourth proportional to 81,583.66, 122,375.49 and 28,995.22 is: 43,492.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,583.66 : 122,375.49 = 28,995.22 : x
  2. Step 2: Convert to fraction form
    81,583.66/122,375.49 = 28,995.22/x
  3. Step 3: Cross multiply
    81,583.66x = 122,375.49 × 28,995.22
  4. Step 4: Simplify right side
    81,583.66x = 3,548,304,255.16
  5. Step 5: Solve for x
    x = 3,548,304,255.16/81,583.66
  6. Step 6: Final answer
    x = 43,492.83

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Why These Related Problems?

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