Finding the Fourth Proportional to 5,161,006.16, 7,122,431.52 and 2,869,205.12
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Solution
The fourth proportional to 5,161,006.16, 7,122,431.52 and 2,869,205.12 is: 3,959,638.17
Step by Step Solution
- Step 1: Write the proportion equation
5,161,006.16 : 7,122,431.52 = 2,869,205.12 : x - Step 2: Convert to fraction form
5,161,006.16/7,122,431.52 = 2,869,205.12/x - Step 3: Cross multiply
5,161,006.16x = 7,122,431.52 × 2,869,205.12 - Step 4: Simplify right side
5,161,006.16x = 20,435,716,984,033.38 - Step 5: Solve for x
x = 20,435,716,984,033.38/5,161,006.16 - Step 6: Final answer
x = 3,959,638.17
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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.