Finding the Fourth Proportional to 84,310.20, 126,465.30 and 79,471.80
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Solution
The fourth proportional to 84,310.20, 126,465.30 and 79,471.80 is: 119,207.70
Step by Step Solution
- Step 1: Write the proportion equation
84,310.20 : 126,465.30 = 79,471.80 : x - Step 2: Convert to fraction form
84,310.20/126,465.30 = 79,471.80/x - Step 3: Cross multiply
84,310.20x = 126,465.30 × 79,471.80 - Step 4: Simplify right side
84,310.20x = 10,050,425,028.54 - Step 5: Solve for x
x = 10,050,425,028.54/84,310.20 - Step 6: Final answer
x = 119,207.70
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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.