Home / 87,973.86-131,959.67-21,414.05

Finding the Fourth Proportional to 87,973.86, 131,959.67 and 21,414.05

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Solution

The fourth proportional to 87,973.86, 131,959.67 and 21,414.05 is: 32,120.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,973.86 : 131,959.67 = 21,414.05 : x
  2. Step 2: Convert to fraction form
    87,973.86/131,959.67 = 21,414.05/x
  3. Step 3: Cross multiply
    87,973.86x = 131,959.67 × 21,414.05
  4. Step 4: Simplify right side
    87,973.86x = 2,825,790,204.49
  5. Step 5: Solve for x
    x = 2,825,790,204.49/87,973.86
  6. Step 6: Final answer
    x = 32,120.79

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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.