Home / 87,653.05-131,396.34-28,447.31

Finding the Fourth Proportional to 87,653.05, 131,396.34 and 28,447.31

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Solution

The fourth proportional to 87,653.05, 131,396.34 and 28,447.31 is: 42,643.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,653.05 : 131,396.34 = 28,447.31 : x
  2. Step 2: Convert to fraction form
    87,653.05/131,396.34 = 28,447.31/x
  3. Step 3: Cross multiply
    87,653.05x = 131,396.34 × 28,447.31
  4. Step 4: Simplify right side
    87,653.05x = 3,737,872,745.34
  5. Step 5: Solve for x
    x = 3,737,872,745.34/87,653.05
  6. Step 6: Final answer
    x = 42,643.96

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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.