Finding the Fourth Proportional to 87.05, 119.99 and 75.96
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Solution
The fourth proportional to 87.05, 119.99 and 75.96 is: 104.71
Step by Step Solution
- Step 1: Write the proportion equation
87.05 : 119.99 = 75.96 : x - Step 2: Convert to fraction form
87.05/119.99 = 75.96/x - Step 3: Cross multiply
87.05x = 119.99 × 75.96 - Step 4: Simplify right side
87.05x = 9,114.06 - Step 5: Solve for x
x = 9,114.06/87.05 - Step 6: Final answer
x = 104.71
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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.