Finding the Fourth Proportional to 84.06, 125.97 and 47.91
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Solution
The fourth proportional to 84.06, 125.97 and 47.91 is: 71.80
Step by Step Solution
- Step 1: Write the proportion equation
84.06 : 125.97 = 47.91 : x - Step 2: Convert to fraction form
84.06/125.97 = 47.91/x - Step 3: Cross multiply
84.06x = 125.97 × 47.91 - Step 4: Simplify right side
84.06x = 6,035.22 - Step 5: Solve for x
x = 6,035.22/84.06 - Step 6: Final answer
x = 71.80
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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.