Finding the Fourth Proportional to 87,764.82, 121,115.75 and 47,478.75
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Solution
The fourth proportional to 87,764.82, 121,115.75 and 47,478.75 is: 65,520.83
Step by Step Solution
- Step 1: Write the proportion equation
87,764.82 : 121,115.75 = 47,478.75 : x - Step 2: Convert to fraction form
87,764.82/121,115.75 = 47,478.75/x - Step 3: Cross multiply
87,764.82x = 121,115.75 × 47,478.75 - Step 4: Simplify right side
87,764.82x = 5,750,424,177.92 - Step 5: Solve for x
x = 5,750,424,177.92/87,764.82 - Step 6: Final answer
x = 65,520.83
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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.