Home / 87,509.88-131,334.90-45,402.04

Finding the Fourth Proportional to 87,509.88, 131,334.90 and 45,402.04

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Solution

The fourth proportional to 87,509.88, 131,334.90 and 45,402.04 is: 68,139.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,509.88 : 131,334.90 = 45,402.04 : x
  2. Step 2: Convert to fraction form
    87,509.88/131,334.90 = 45,402.04/x
  3. Step 3: Cross multiply
    87,509.88x = 131,334.90 × 45,402.04
  4. Step 4: Simplify right side
    87,509.88x = 5,962,872,383.20
  5. Step 5: Solve for x
    x = 5,962,872,383.20/87,509.88
  6. Step 6: Final answer
    x = 68,139.42

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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.