Home / 87,965.90-131,947.71-21,406.07

Finding the Fourth Proportional to 87,965.90, 131,947.71 and 21,406.07

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Solution

The fourth proportional to 87,965.90, 131,947.71 and 21,406.07 is: 32,108.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,965.90 : 131,947.71 = 21,406.07 : x
  2. Step 2: Convert to fraction form
    87,965.90/131,947.71 = 21,406.07/x
  3. Step 3: Cross multiply
    87,965.90x = 131,947.71 × 21,406.07
  4. Step 4: Simplify right side
    87,965.90x = 2,824,481,916.60
  5. Step 5: Solve for x
    x = 2,824,481,916.60/87,965.90
  6. Step 6: Final answer
    x = 32,108.83

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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.