Home / 87,965.15-131,947.74-21,405.33

Finding the Fourth Proportional to 87,965.15, 131,947.74 and 21,405.33

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Solution

The fourth proportional to 87,965.15, 131,947.74 and 21,405.33 is: 32,108.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,965.15 : 131,947.74 = 21,405.33 : x
  2. Step 2: Convert to fraction form
    87,965.15/131,947.74 = 21,405.33/x
  3. Step 3: Cross multiply
    87,965.15x = 131,947.74 × 21,405.33
  4. Step 4: Simplify right side
    87,965.15x = 2,824,384,917.45
  5. Step 5: Solve for x
    x = 2,824,384,917.45/87,965.15
  6. Step 6: Final answer
    x = 32,108.00

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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.