Finding the Fourth Proportional to 84,469.24, 126,722.49 and 31,879.18
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Solution
The fourth proportional to 84,469.24, 126,722.49 and 31,879.18 is: 47,825.80
Step by Step Solution
- Step 1: Write the proportion equation
84,469.24 : 126,722.49 = 31,879.18 : x - Step 2: Convert to fraction form
84,469.24/126,722.49 = 31,879.18/x - Step 3: Cross multiply
84,469.24x = 126,722.49 × 31,879.18 - Step 4: Simplify right side
84,469.24x = 4,039,808,751.95 - Step 5: Solve for x
x = 4,039,808,751.95/84,469.24 - Step 6: Final answer
x = 47,825.80
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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.