Finding the Fourth Proportional to 20,790,451.02, 31,183,293.90 and 5,439,222.09
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Solution
The fourth proportional to 20,790,451.02, 31,183,293.90 and 5,439,222.09 is: 8,158,209.79
Step by Step Solution
- Step 1: Write the proportion equation
20,790,451.02 : 31,183,293.90 = 5,439,222.09 : x - Step 2: Convert to fraction form
20,790,451.02/31,183,293.90 = 5,439,222.09/x - Step 3: Cross multiply
20,790,451.02x = 31,183,293.90 × 5,439,222.09 - Step 4: Simplify right side
20,790,451.02x = 169,612,861,019,842.25 - Step 5: Solve for x
x = 169,612,861,019,842.25/20,790,451.02 - Step 6: Final answer
x = 8,158,209.79
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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.