Finding the Fourth Proportional to 80,578.44, 120,922.74 and 27,987.48
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Solution
The fourth proportional to 80,578.44, 120,922.74 and 27,987.48 is: 42,000.35
Step by Step Solution
- Step 1: Write the proportion equation
80,578.44 : 120,922.74 = 27,987.48 : x - Step 2: Convert to fraction form
80,578.44/120,922.74 = 27,987.48/x - Step 3: Cross multiply
80,578.44x = 120,922.74 × 27,987.48 - Step 4: Simplify right side
80,578.44x = 3,384,322,767.30 - Step 5: Solve for x
x = 3,384,322,767.30/80,578.44 - Step 6: Final answer
x = 42,000.35
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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.