Home / 86,375.25-129,578.94-30,214.04

Finding the Fourth Proportional to 86,375.25, 129,578.94 and 30,214.04

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Solution

The fourth proportional to 86,375.25, 129,578.94 and 30,214.04 is: 45,326.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,375.25 : 129,578.94 = 30,214.04 : x
  2. Step 2: Convert to fraction form
    86,375.25/129,578.94 = 30,214.04/x
  3. Step 3: Cross multiply
    86,375.25x = 129,578.94 × 30,214.04
  4. Step 4: Simplify right side
    86,375.25x = 3,915,102,628.42
  5. Step 5: Solve for x
    x = 3,915,102,628.42/86,375.25
  6. Step 6: Final answer
    x = 45,326.67

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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.