Finding the Fourth Proportional to 87,717.70, 121,051.11 and 48,427.91
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Solution
The fourth proportional to 87,717.70, 121,051.11 and 48,427.91 is: 66,830.89
Step by Step Solution
- Step 1: Write the proportion equation
87,717.70 : 121,051.11 = 48,427.91 : x - Step 2: Convert to fraction form
87,717.70/121,051.11 = 48,427.91/x - Step 3: Cross multiply
87,717.70x = 121,051.11 × 48,427.91 - Step 4: Simplify right side
87,717.70x = 5,862,252,260.48 - Step 5: Solve for x
x = 5,862,252,260.48/87,717.70 - Step 6: Final answer
x = 66,830.89
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.