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Finding the Fourth Proportional to 103,634.49, 155,451.37 and 28,754.49

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Solution

The fourth proportional to 103,634.49, 155,451.37 and 28,754.49 is: 43,131.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,634.49 : 155,451.37 = 28,754.49 : x
  2. Step 2: Convert to fraction form
    103,634.49/155,451.37 = 28,754.49/x
  3. Step 3: Cross multiply
    103,634.49x = 155,451.37 × 28,754.49
  4. Step 4: Simplify right side
    103,634.49x = 4,469,924,864.15
  5. Step 5: Solve for x
    x = 4,469,924,864.15/103,634.49
  6. Step 6: Final answer
    x = 43,131.63

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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.