Finding the Fourth Proportional to 8,642,916.05, 11,929,709.33 and 5,704,877.66
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Solution
The fourth proportional to 8,642,916.05, 11,929,709.33 and 5,704,877.66 is: 7,874,371.55
Step by Step Solution
- Step 1: Write the proportion equation
8,642,916.05 : 11,929,709.33 = 5,704,877.66 : x - Step 2: Convert to fraction form
8,642,916.05/11,929,709.33 = 5,704,877.66/x - Step 3: Cross multiply
8,642,916.05x = 11,929,709.33 × 5,704,877.66 - Step 4: Simplify right side
8,642,916.05x = 68,057,532,180,230.92 - Step 5: Solve for x
x = 68,057,532,180,230.92/8,642,916.05 - Step 6: Final answer
x = 7,874,371.55
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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.