Finding the Fourth Proportional to 81,591.45, 122,390.19 and 22,431.75
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Solution
The fourth proportional to 81,591.45, 122,390.19 and 22,431.75 is: 33,648.45
Step by Step Solution
- Step 1: Write the proportion equation
81,591.45 : 122,390.19 = 22,431.75 : x - Step 2: Convert to fraction form
81,591.45/122,390.19 = 22,431.75/x - Step 3: Cross multiply
81,591.45x = 122,390.19 × 22,431.75 - Step 4: Simplify right side
81,591.45x = 2,745,426,144.53 - Step 5: Solve for x
x = 2,745,426,144.53/81,591.45 - Step 6: Final answer
x = 33,648.45
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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.