Finding the Fourth Proportional to 5,161,021.08, 7,121,805.64 and 2,869,042.20
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Solution
The fourth proportional to 5,161,021.08, 7,121,805.64 and 2,869,042.20 is: 3,959,053.96
Step by Step Solution
- Step 1: Write the proportion equation
5,161,021.08 : 7,121,805.64 = 2,869,042.20 : x - Step 2: Convert to fraction form
5,161,021.08/7,121,805.64 = 2,869,042.20/x - Step 3: Cross multiply
5,161,021.08x = 7,121,805.64 × 2,869,042.20 - Step 4: Simplify right side
5,161,021.08x = 20,432,760,921,358.01 - Step 5: Solve for x
x = 20,432,760,921,358.01/5,161,021.08 - Step 6: Final answer
x = 3,959,053.96
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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.