Home / 87,852.96-131,778.29-21,293.66

Finding the Fourth Proportional to 87,852.96, 131,778.29 and 21,293.66

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Solution

The fourth proportional to 87,852.96, 131,778.29 and 21,293.66 is: 31,940.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,852.96 : 131,778.29 = 21,293.66 : x
  2. Step 2: Convert to fraction form
    87,852.96/131,778.29 = 21,293.66/x
  3. Step 3: Cross multiply
    87,852.96x = 131,778.29 × 21,293.66
  4. Step 4: Simplify right side
    87,852.96x = 2,806,042,485.32
  5. Step 5: Solve for x
    x = 2,806,042,485.32/87,852.96
  6. Step 6: Final answer
    x = 31,940.22

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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.