Home / 87,741.90-131,611.68-21,181.67

Finding the Fourth Proportional to 87,741.90, 131,611.68 and 21,181.67

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Solution

The fourth proportional to 87,741.90, 131,611.68 and 21,181.67 is: 31,772.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,741.90 : 131,611.68 = 21,181.67 : x
  2. Step 2: Convert to fraction form
    87,741.90/131,611.68 = 21,181.67/x
  3. Step 3: Cross multiply
    87,741.90x = 131,611.68 × 21,181.67
  4. Step 4: Simplify right side
    87,741.90x = 2,787,754,515.85
  5. Step 5: Solve for x
    x = 2,787,754,515.85/87,741.90
  6. Step 6: Final answer
    x = 31,772.22

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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.