Home / 87,975.40-131,961.24-21,415.90

Finding the Fourth Proportional to 87,975.40, 131,961.24 and 21,415.90

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Solution

The fourth proportional to 87,975.40, 131,961.24 and 21,415.90 is: 32,123.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,975.40 : 131,961.24 = 21,415.90 : x
  2. Step 2: Convert to fraction form
    87,975.40/131,961.24 = 21,415.90/x
  3. Step 3: Cross multiply
    87,975.40x = 131,961.24 × 21,415.90
  4. Step 4: Simplify right side
    87,975.40x = 2,826,068,719.72
  5. Step 5: Solve for x
    x = 2,826,068,719.72/87,975.40
  6. Step 6: Final answer
    x = 32,123.40

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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.