Finding the Fourth Proportional to 87,141.63, 120,295.26 and 66,991.44
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Solution
The fourth proportional to 87,141.63, 120,295.26 and 66,991.44 is: 92,478.79
Step by Step Solution
- Step 1: Write the proportion equation
87,141.63 : 120,295.26 = 66,991.44 : x - Step 2: Convert to fraction form
87,141.63/120,295.26 = 66,991.44/x - Step 3: Cross multiply
87,141.63x = 120,295.26 × 66,991.44 - Step 4: Simplify right side
87,141.63x = 8,058,752,692.57 - Step 5: Solve for x
x = 8,058,752,692.57/87,141.63 - Step 6: Final answer
x = 92,478.79
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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.