Home / 87,427.80-131,113.89-28,249.47

Finding the Fourth Proportional to 87,427.80, 131,113.89 and 28,249.47

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Solution

The fourth proportional to 87,427.80, 131,113.89 and 28,249.47 is: 42,365.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,427.80 : 131,113.89 = 28,249.47 : x
  2. Step 2: Convert to fraction form
    87,427.80/131,113.89 = 28,249.47/x
  3. Step 3: Cross multiply
    87,427.80x = 131,113.89 × 28,249.47
  4. Step 4: Simplify right side
    87,427.80x = 3,703,897,902.14
  5. Step 5: Solve for x
    x = 3,703,897,902.14/87,427.80
  6. Step 6: Final answer
    x = 42,365.22

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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.