Finding the Fourth Proportional to 76.11, 113.99 and 60.09
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Solution
The fourth proportional to 76.11, 113.99 and 60.09 is: 89.99
Step by Step Solution
- Step 1: Write the proportion equation
76.11 : 113.99 = 60.09 : x - Step 2: Convert to fraction form
76.11/113.99 = 60.09/x - Step 3: Cross multiply
76.11x = 113.99 × 60.09 - Step 4: Simplify right side
76.11x = 6,849.36 - Step 5: Solve for x
x = 6,849.36/76.11 - Step 6: Final answer
x = 89.99
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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.