Home / 87,480.14-131,241.03-28,315.80

Finding the Fourth Proportional to 87,480.14, 131,241.03 and 28,315.80

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Solution

The fourth proportional to 87,480.14, 131,241.03 and 28,315.80 is: 42,480.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,480.14 : 131,241.03 = 28,315.80 : x
  2. Step 2: Convert to fraction form
    87,480.14/131,241.03 = 28,315.80/x
  3. Step 3: Cross multiply
    87,480.14x = 131,241.03 × 28,315.80
  4. Step 4: Simplify right side
    87,480.14x = 3,716,195,302.52
  5. Step 5: Solve for x
    x = 3,716,195,302.52/87,480.14
  6. Step 6: Final answer
    x = 42,480.45

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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.