Finding the Fourth Proportional to 77,793.21, 107,357.20 and 47,591.96
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Solution
The fourth proportional to 77,793.21, 107,357.20 and 47,591.96 is: 65,678.47
Step by Step Solution
- Step 1: Write the proportion equation
77,793.21 : 107,357.20 = 47,591.96 : x - Step 2: Convert to fraction form
77,793.21/107,357.20 = 47,591.96/x - Step 3: Cross multiply
77,793.21x = 107,357.20 × 47,591.96 - Step 4: Simplify right side
77,793.21x = 5,109,338,912.35 - Step 5: Solve for x
x = 5,109,338,912.35/77,793.21 - Step 6: Final answer
x = 65,678.47
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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.