Home / 281,988-422,993.52-71,631.36

Finding the Fourth Proportional to 281,988, 422,993.52 and 71,631.36

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Solution

The fourth proportional to 281,988, 422,993.52 and 71,631.36 is: 107,449.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,988 : 422,993.52 = 71,631.36 : x
  2. Step 2: Convert to fraction form
    281,988/422,993.52 = 71,631.36/x
  3. Step 3: Cross multiply
    281,988x = 422,993.52 × 71,631.36
  4. Step 4: Simplify right side
    281,988x = 30,299,601,108.79
  5. Step 5: Solve for x
    x = 30,299,601,108.79/281,988
  6. Step 6: Final answer
    x = 107,449.97

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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.