Finding the Fourth Proportional to 80,121.25, 120,067.05 and 44,987.09
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Solution
The fourth proportional to 80,121.25, 120,067.05 and 44,987.09 is: 67,416.17
Step by Step Solution
- Step 1: Write the proportion equation
80,121.25 : 120,067.05 = 44,987.09 : x - Step 2: Convert to fraction form
80,121.25/120,067.05 = 44,987.09/x - Step 3: Cross multiply
80,121.25x = 120,067.05 × 44,987.09 - Step 4: Simplify right side
80,121.25x = 5,401,467,184.38 - Step 5: Solve for x
x = 5,401,467,184.38/80,121.25 - Step 6: Final answer
x = 67,416.17
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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.