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Finding the Fourth Proportional to 69,879.71, 96,431.11 and 38,048.54

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Solution

The fourth proportional to 69,879.71, 96,431.11 and 38,048.54 is: 52,505.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,879.71 : 96,431.11 = 38,048.54 : x
  2. Step 2: Convert to fraction form
    69,879.71/96,431.11 = 38,048.54/x
  3. Step 3: Cross multiply
    69,879.71x = 96,431.11 × 38,048.54
  4. Step 4: Simplify right side
    69,879.71x = 3,669,062,368.80
  5. Step 5: Solve for x
    x = 3,669,062,368.80/69,879.71
  6. Step 6: Final answer
    x = 52,505.40

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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.