Home / 87,858.55-131,786.64-21,299.25

Finding the Fourth Proportional to 87,858.55, 131,786.64 and 21,299.25

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Solution

The fourth proportional to 87,858.55, 131,786.64 and 21,299.25 is: 31,948.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,858.55 : 131,786.64 = 21,299.25 : x
  2. Step 2: Convert to fraction form
    87,858.55/131,786.64 = 21,299.25/x
  3. Step 3: Cross multiply
    87,858.55x = 131,786.64 × 21,299.25
  4. Step 4: Simplify right side
    87,858.55x = 2,806,956,485.52
  5. Step 5: Solve for x
    x = 2,806,956,485.52/87,858.55
  6. Step 6: Final answer
    x = 31,948.59

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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.