Finding the Fourth Proportional to 80,408.20, 110,961.66 and 49,773.20
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Solution
The fourth proportional to 80,408.20, 110,961.66 and 49,773.20 is: 68,685.99
Step by Step Solution
- Step 1: Write the proportion equation
80,408.20 : 110,961.66 = 49,773.20 : x - Step 2: Convert to fraction form
80,408.20/110,961.66 = 49,773.20/x - Step 3: Cross multiply
80,408.20x = 110,961.66 × 49,773.20 - Step 4: Simplify right side
80,408.20x = 5,522,916,473.41 - Step 5: Solve for x
x = 5,522,916,473.41/80,408.20 - Step 6: Final answer
x = 68,685.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.