Home / 87,790.30-131,651.43-31,618.42

Finding the Fourth Proportional to 87,790.30, 131,651.43 and 31,618.42

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Solution

The fourth proportional to 87,790.30, 131,651.43 and 31,618.42 is: 47,415.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,790.30 : 131,651.43 = 31,618.42 : x
  2. Step 2: Convert to fraction form
    87,790.30/131,651.43 = 31,618.42/x
  3. Step 3: Cross multiply
    87,790.30x = 131,651.43 × 31,618.42
  4. Step 4: Simplify right side
    87,790.30x = 4,162,610,207.34
  5. Step 5: Solve for x
    x = 4,162,610,207.34/87,790.30
  6. Step 6: Final answer
    x = 47,415.38

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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.