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Finding the Fourth Proportional to 69,099.76, 95,352.44 and 40,800

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Solution

The fourth proportional to 69,099.76, 95,352.44 and 40,800 is: 56,300.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,099.76 : 95,352.44 = 40,800 : x
  2. Step 2: Convert to fraction form
    69,099.76/95,352.44 = 40,800/x
  3. Step 3: Cross multiply
    69,099.76x = 95,352.44 × 40,800
  4. Step 4: Simplify right side
    69,099.76x = 3,890,379,552
  5. Step 5: Solve for x
    x = 3,890,379,552/69,099.76
  6. Step 6: Final answer
    x = 56,300.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.