Finding the Fourth Proportional to 7,211,121.72, 9,951,350.94 and 3,948,147.96
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Solution
The fourth proportional to 7,211,121.72, 9,951,350.94 and 3,948,147.96 is: 5,448,445.81
Step by Step Solution
- Step 1: Write the proportion equation
7,211,121.72 : 9,951,350.94 = 3,948,147.96 : x - Step 2: Convert to fraction form
7,211,121.72/9,951,350.94 = 3,948,147.96/x - Step 3: Cross multiply
7,211,121.72x = 9,951,350.94 × 3,948,147.96 - Step 4: Simplify right side
7,211,121.72x = 39,289,405,913,005.08 - Step 5: Solve for x
x = 39,289,405,913,005.08/7,211,121.72 - Step 6: Final answer
x = 5,448,445.81
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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.