Finding the Fourth Proportional to 80,435.13, 120,636.84 and 27,121.92
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Solution
The fourth proportional to 80,435.13, 120,636.84 and 27,121.92 is: 40,677.53
Step by Step Solution
- Step 1: Write the proportion equation
80,435.13 : 120,636.84 = 27,121.92 : x - Step 2: Convert to fraction form
80,435.13/120,636.84 = 27,121.92/x - Step 3: Cross multiply
80,435.13x = 120,636.84 × 27,121.92 - Step 4: Simplify right side
80,435.13x = 3,271,902,723.53 - Step 5: Solve for x
x = 3,271,902,723.53/80,435.13 - Step 6: Final answer
x = 40,677.53
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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.