Home / 87,965.34-131,975.96-28,787.55

Finding the Fourth Proportional to 87,965.34, 131,975.96 and 28,787.55

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Solution

The fourth proportional to 87,965.34, 131,975.96 and 28,787.55 is: 43,190.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,965.34 : 131,975.96 = 28,787.55 : x
  2. Step 2: Convert to fraction form
    87,965.34/131,975.96 = 28,787.55/x
  3. Step 3: Cross multiply
    87,965.34x = 131,975.96 × 28,787.55
  4. Step 4: Simplify right side
    87,965.34x = 3,799,264,403.36
  5. Step 5: Solve for x
    x = 3,799,264,403.36/87,965.34
  6. Step 6: Final answer
    x = 43,190.47

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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.