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Finding the Fourth Proportional to 69,776.80, 104,682.84 and 30,340.96

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Solution

The fourth proportional to 69,776.80, 104,682.84 and 30,340.96 is: 45,519.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,776.80 : 104,682.84 = 30,340.96 : x
  2. Step 2: Convert to fraction form
    69,776.80/104,682.84 = 30,340.96/x
  3. Step 3: Cross multiply
    69,776.80x = 104,682.84 × 30,340.96
  4. Step 4: Simplify right side
    69,776.80x = 3,176,177,861.13
  5. Step 5: Solve for x
    x = 3,176,177,861.13/69,776.80
  6. Step 6: Final answer
    x = 45,519.11

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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.