Finding the Fourth Proportional to 80,755.80, 121,133.70 and 25,351.80
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Solution
The fourth proportional to 80,755.80, 121,133.70 and 25,351.80 is: 38,027.70
Step by Step Solution
- Step 1: Write the proportion equation
80,755.80 : 121,133.70 = 25,351.80 : x - Step 2: Convert to fraction form
80,755.80/121,133.70 = 25,351.80/x - Step 3: Cross multiply
80,755.80x = 121,133.70 × 25,351.80 - Step 4: Simplify right side
80,755.80x = 3,070,957,335.66 - Step 5: Solve for x
x = 3,070,957,335.66/80,755.80 - Step 6: Final answer
x = 38,027.70
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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.