Finding the Fourth Proportional to 81,168.48, 121,741.38 and 27,859.62
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Solution
The fourth proportional to 81,168.48, 121,741.38 and 27,859.62 is: 41,785.54
Step by Step Solution
- Step 1: Write the proportion equation
81,168.48 : 121,741.38 = 27,859.62 : x - Step 2: Convert to fraction form
81,168.48/121,741.38 = 27,859.62/x - Step 3: Cross multiply
81,168.48x = 121,741.38 × 27,859.62 - Step 4: Simplify right side
81,168.48x = 3,391,668,585.08 - Step 5: Solve for x
x = 3,391,668,585.08/81,168.48 - Step 6: Final answer
x = 41,785.54
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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.