Finding the Fourth Proportional to 87,769.18, 121,120.92 and 47,482.78
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Solution
The fourth proportional to 87,769.18, 121,120.92 and 47,482.78 is: 65,525.94
Step by Step Solution
- Step 1: Write the proportion equation
87,769.18 : 121,120.92 = 47,482.78 : x - Step 2: Convert to fraction form
87,769.18/121,120.92 = 47,482.78/x - Step 3: Cross multiply
87,769.18x = 121,120.92 × 47,482.78 - Step 4: Simplify right side
87,769.18x = 5,751,157,997.76 - Step 5: Solve for x
x = 5,751,157,997.76/87,769.18 - Step 6: Final answer
x = 65,525.94
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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.