Home / 87,975.26-131,961.06-21,415.76

Finding the Fourth Proportional to 87,975.26, 131,961.06 and 21,415.76

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Solution

The fourth proportional to 87,975.26, 131,961.06 and 21,415.76 is: 32,123.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,975.26 : 131,961.06 = 21,415.76 : x
  2. Step 2: Convert to fraction form
    87,975.26/131,961.06 = 21,415.76/x
  3. Step 3: Cross multiply
    87,975.26x = 131,961.06 × 21,415.76
  4. Step 4: Simplify right side
    87,975.26x = 2,826,046,390.31
  5. Step 5: Solve for x
    x = 2,826,046,390.31/87,975.26
  6. Step 6: Final answer
    x = 32,123.19

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1.5x scale

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.