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Finding the Fourth Proportional to 68,357.44, 102,543.48 and 28,918.56

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Solution

The fourth proportional to 68,357.44, 102,543.48 and 28,918.56 is: 43,380.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,357.44 : 102,543.48 = 28,918.56 : x
  2. Step 2: Convert to fraction form
    68,357.44/102,543.48 = 28,918.56/x
  3. Step 3: Cross multiply
    68,357.44x = 102,543.48 × 28,918.56
  4. Step 4: Simplify right side
    68,357.44x = 2,965,409,778.99
  5. Step 5: Solve for x
    x = 2,965,409,778.99/68,357.44
  6. Step 6: Final answer
    x = 43,380.94

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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.