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Finding the Fourth Proportional to 69,778.62, 96,297.03 and 39,976.38

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Solution

The fourth proportional to 69,778.62, 96,297.03 and 39,976.38 is: 55,168.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,778.62 : 96,297.03 = 39,976.38 : x
  2. Step 2: Convert to fraction form
    69,778.62/96,297.03 = 39,976.38/x
  3. Step 3: Cross multiply
    69,778.62x = 96,297.03 × 39,976.38
  4. Step 4: Simplify right side
    69,778.62x = 3,849,606,664.15
  5. Step 5: Solve for x
    x = 3,849,606,664.15/69,778.62
  6. Step 6: Final answer
    x = 55,168.86

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1.5x scale

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.