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Finding the Fourth Proportional to 69,979.56, 96,571.74 and 38,148.42

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Solution

The fourth proportional to 69,979.56, 96,571.74 and 38,148.42 is: 52,644.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,979.56 : 96,571.74 = 38,148.42 : x
  2. Step 2: Convert to fraction form
    69,979.56/96,571.74 = 38,148.42/x
  3. Step 3: Cross multiply
    69,979.56x = 96,571.74 × 38,148.42
  4. Step 4: Simplify right side
    69,979.56x = 3,684,059,297.65
  5. Step 5: Solve for x
    x = 3,684,059,297.65/69,979.56
  6. Step 6: Final answer
    x = 52,644.79

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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.