Home / 87,740.98-131,611.48-21,181.05

Finding the Fourth Proportional to 87,740.98, 131,611.48 and 21,181.05

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Solution

The fourth proportional to 87,740.98, 131,611.48 and 21,181.05 is: 31,771.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,740.98 : 131,611.48 = 21,181.05 : x
  2. Step 2: Convert to fraction form
    87,740.98/131,611.48 = 21,181.05/x
  3. Step 3: Cross multiply
    87,740.98x = 131,611.48 × 21,181.05
  4. Step 4: Simplify right side
    87,740.98x = 2,787,669,285.50
  5. Step 5: Solve for x
    x = 2,787,669,285.50/87,740.98
  6. Step 6: Final answer
    x = 31,771.58

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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.