Finding the Fourth Proportional to 87,436.92, 120,665.97 and 55,605.12
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Solution
The fourth proportional to 87,436.92, 120,665.97 and 55,605.12 is: 76,736.99
Step by Step Solution
- Step 1: Write the proportion equation
87,436.92 : 120,665.97 = 55,605.12 : x - Step 2: Convert to fraction form
87,436.92/120,665.97 = 55,605.12/x - Step 3: Cross multiply
87,436.92x = 120,665.97 × 55,605.12 - Step 4: Simplify right side
87,436.92x = 6,709,645,741.77 - Step 5: Solve for x
x = 6,709,645,741.77/87,436.92 - Step 6: Final answer
x = 76,736.99
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1.5x scale
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.