Finding the Fourth Proportional to 81,769.68, 122,701.77 and 34,380.99
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Solution
The fourth proportional to 81,769.68, 122,701.77 and 34,380.99 is: 51,591.35
Step by Step Solution
- Step 1: Write the proportion equation
81,769.68 : 122,701.77 = 34,380.99 : x - Step 2: Convert to fraction form
81,769.68/122,701.77 = 34,380.99/x - Step 3: Cross multiply
81,769.68x = 122,701.77 × 34,380.99 - Step 4: Simplify right side
81,769.68x = 4,218,608,327.35 - Step 5: Solve for x
x = 4,218,608,327.35/81,769.68 - Step 6: Final answer
x = 51,591.35
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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.