Finding the Fourth Proportional to 86,561.31, 129,861.42 and 27,400.53
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Solution
The fourth proportional to 86,561.31, 129,861.42 and 27,400.53 is: 41,106.95
Step by Step Solution
- Step 1: Write the proportion equation
86,561.31 : 129,861.42 = 27,400.53 : x - Step 2: Convert to fraction form
86,561.31/129,861.42 = 27,400.53/x - Step 3: Cross multiply
86,561.31x = 129,861.42 × 27,400.53 - Step 4: Simplify right side
86,561.31x = 3,558,271,734.55 - Step 5: Solve for x
x = 3,558,271,734.55/86,561.31 - Step 6: Final answer
x = 41,106.95
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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.