Finding the Fourth Proportional to 84,310.24, 126,475.08 and 28,157.80
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Solution
The fourth proportional to 84,310.24, 126,475.08 and 28,157.80 is: 42,239.95
Step by Step Solution
- Step 1: Write the proportion equation
84,310.24 : 126,475.08 = 28,157.80 : x - Step 2: Convert to fraction form
84,310.24/126,475.08 = 28,157.80/x - Step 3: Cross multiply
84,310.24x = 126,475.08 × 28,157.80 - Step 4: Simplify right side
84,310.24x = 3,561,260,007.62 - Step 5: Solve for x
x = 3,561,260,007.62/84,310.24 - Step 6: Final answer
x = 42,239.95
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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.