Finding the Fourth Proportional to 67,687.75, 101,531.63 and 18,439.75
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Solution
The fourth proportional to 67,687.75, 101,531.63 and 18,439.75 is: 27,659.63
Step by Step Solution
- Step 1: Write the proportion equation
67,687.75 : 101,531.63 = 18,439.75 : x - Step 2: Convert to fraction form
67,687.75/101,531.63 = 18,439.75/x - Step 3: Cross multiply
67,687.75x = 101,531.63 × 18,439.75 - Step 4: Simplify right side
67,687.75x = 1,872,217,874.29 - Step 5: Solve for x
x = 1,872,217,874.29/67,687.75 - Step 6: Final answer
x = 27,659.63
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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.