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Finding the Fourth Proportional to 68,481.70, 102,722.55 and 57,984.10

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Solution

The fourth proportional to 68,481.70, 102,722.55 and 57,984.10 is: 86,976.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,481.70 : 102,722.55 = 57,984.10 : x
  2. Step 2: Convert to fraction form
    68,481.70/102,722.55 = 57,984.10/x
  3. Step 3: Cross multiply
    68,481.70x = 102,722.55 × 57,984.10
  4. Step 4: Simplify right side
    68,481.70x = 5,956,274,611.46
  5. Step 5: Solve for x
    x = 5,956,274,611.46/68,481.70
  6. Step 6: Final answer
    x = 86,976.15

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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.