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Finding the Fourth Proportional to 69,819.96, 103,950.87 and 65,776.44

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Solution

The fourth proportional to 69,819.96, 103,950.87 and 65,776.44 is: 97,930.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,819.96 : 103,950.87 = 65,776.44 : x
  2. Step 2: Convert to fraction form
    69,819.96/103,950.87 = 65,776.44/x
  3. Step 3: Cross multiply
    69,819.96x = 103,950.87 × 65,776.44
  4. Step 4: Simplify right side
    69,819.96x = 6,837,518,163.50
  5. Step 5: Solve for x
    x = 6,837,518,163.50/69,819.96
  6. Step 6: Final answer
    x = 97,930.71

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.