Home / 87,327.78-131,007.90-28,157.28

Finding the Fourth Proportional to 87,327.78, 131,007.90 and 28,157.28

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Solution

The fourth proportional to 87,327.78, 131,007.90 and 28,157.28 is: 42,241.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,327.78 : 131,007.90 = 28,157.28 : x
  2. Step 2: Convert to fraction form
    87,327.78/131,007.90 = 28,157.28/x
  3. Step 3: Cross multiply
    87,327.78x = 131,007.90 × 28,157.28
  4. Step 4: Simplify right side
    87,327.78x = 3,688,826,122.51
  5. Step 5: Solve for x
    x = 3,688,826,122.51/87,327.78
  6. Step 6: Final answer
    x = 42,241.15

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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.