Finding the Fourth Proportional to 87.05, 120.15 and 50.23
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Solution
The fourth proportional to 87.05, 120.15 and 50.23 is: 69.33
Step by Step Solution
- Step 1: Write the proportion equation
87.05 : 120.15 = 50.23 : x - Step 2: Convert to fraction form
87.05/120.15 = 50.23/x - Step 3: Cross multiply
87.05x = 120.15 × 50.23 - Step 4: Simplify right side
87.05x = 6,035.13 - Step 5: Solve for x
x = 6,035.13/87.05 - Step 6: Final answer
x = 69.33
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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.