Finding the Fourth Proportional to 81,311.43, 121,965.66 and 33,951.99
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Solution
The fourth proportional to 81,311.43, 121,965.66 and 33,951.99 is: 50,927.36
Step by Step Solution
- Step 1: Write the proportion equation
81,311.43 : 121,965.66 = 33,951.99 : x - Step 2: Convert to fraction form
81,311.43/121,965.66 = 33,951.99/x - Step 3: Cross multiply
81,311.43x = 121,965.66 × 33,951.99 - Step 4: Simplify right side
81,311.43x = 4,140,976,868.66 - Step 5: Solve for x
x = 4,140,976,868.66/81,311.43 - Step 6: Final answer
x = 50,927.36
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.