Home / 105,849.66-158,728.31-30,968.20

Finding the Fourth Proportional to 105,849.66, 158,728.31 and 30,968.20

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Solution

The fourth proportional to 105,849.66, 158,728.31 and 30,968.20 is: 46,438.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,849.66 : 158,728.31 = 30,968.20 : x
  2. Step 2: Convert to fraction form
    105,849.66/158,728.31 = 30,968.20/x
  3. Step 3: Cross multiply
    105,849.66x = 158,728.31 × 30,968.20
  4. Step 4: Simplify right side
    105,849.66x = 4,915,530,049.74
  5. Step 5: Solve for x
    x = 4,915,530,049.74/105,849.66
  6. Step 6: Final answer
    x = 46,438.79

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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.