Home / 86,091.12-129,121.92-22,912.08

Finding the Fourth Proportional to 86,091.12, 129,121.92 and 22,912.08

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Solution

The fourth proportional to 86,091.12, 129,121.92 and 22,912.08 is: 34,364.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,091.12 : 129,121.92 = 22,912.08 : x
  2. Step 2: Convert to fraction form
    86,091.12/129,121.92 = 22,912.08/x
  3. Step 3: Cross multiply
    86,091.12x = 129,121.92 × 22,912.08
  4. Step 4: Simplify right side
    86,091.12x = 2,958,451,760.79
  5. Step 5: Solve for x
    x = 2,958,451,760.79/86,091.12
  6. Step 6: Final answer
    x = 34,364.19

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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.