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Finding the Fourth Proportional to 69,879.24, 104,232.42 and 64,147.68

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Solution

The fourth proportional to 69,879.24, 104,232.42 and 64,147.68 is: 95,683.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,879.24 : 104,232.42 = 64,147.68 : x
  2. Step 2: Convert to fraction form
    69,879.24/104,232.42 = 64,147.68/x
  3. Step 3: Cross multiply
    69,879.24x = 104,232.42 × 64,147.68
  4. Step 4: Simplify right side
    69,879.24x = 6,686,267,923.79
  5. Step 5: Solve for x
    x = 6,686,267,923.79/69,879.24
  6. Step 6: Final answer
    x = 95,683.18

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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.