Home / 87,945.58-131,917.20-21,385.52

Finding the Fourth Proportional to 87,945.58, 131,917.20 and 21,385.52

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Solution

The fourth proportional to 87,945.58, 131,917.20 and 21,385.52 is: 32,078.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,945.58 : 131,917.20 = 21,385.52 : x
  2. Step 2: Convert to fraction form
    87,945.58/131,917.20 = 21,385.52/x
  3. Step 3: Cross multiply
    87,945.58x = 131,917.20 × 21,385.52
  4. Step 4: Simplify right side
    87,945.58x = 2,821,117,918.94
  5. Step 5: Solve for x
    x = 2,821,117,918.94/87,945.58
  6. Step 6: Final answer
    x = 32,078.00

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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.