Finding the Fourth Proportional to 84,326.40, 126,489.60 and 31,747.68
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Solution
The fourth proportional to 84,326.40, 126,489.60 and 31,747.68 is: 47,621.52
Step by Step Solution
- Step 1: Write the proportion equation
84,326.40 : 126,489.60 = 31,747.68 : x - Step 2: Convert to fraction form
84,326.40/126,489.60 = 31,747.68/x - Step 3: Cross multiply
84,326.40x = 126,489.60 × 31,747.68 - Step 4: Simplify right side
84,326.40x = 4,015,751,344.13 - Step 5: Solve for x
x = 4,015,751,344.13/84,326.40 - Step 6: Final answer
x = 47,621.52
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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.