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Finding the Fourth Proportional to 68,200.44, 102,315.24 and 21,456.96

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Solution

The fourth proportional to 68,200.44, 102,315.24 and 21,456.96 is: 32,190.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,200.44 : 102,315.24 = 21,456.96 : x
  2. Step 2: Convert to fraction form
    68,200.44/102,315.24 = 21,456.96/x
  3. Step 3: Cross multiply
    68,200.44x = 102,315.24 × 21,456.96
  4. Step 4: Simplify right side
    68,200.44x = 2,195,374,012.07
  5. Step 5: Solve for x
    x = 2,195,374,012.07/68,200.44
  6. Step 6: Final answer
    x = 32,190.03

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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.