Finding the Fourth Proportional to 7,977,981.36, 11,083,940.49 and 7,882,321.98
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Solution
The fourth proportional to 7,977,981.36, 11,083,940.49 and 7,882,321.98 is: 10,951,039.34
Step by Step Solution
- Step 1: Write the proportion equation
7,977,981.36 : 11,083,940.49 = 7,882,321.98 : x - Step 2: Convert to fraction form
7,977,981.36/11,083,940.49 = 7,882,321.98/x - Step 3: Cross multiply
7,977,981.36x = 11,083,940.49 × 7,882,321.98 - Step 4: Simplify right side
7,977,981.36x = 87,367,187,749,338.98 - Step 5: Solve for x
x = 87,367,187,749,338.98/7,977,981.36 - Step 6: Final answer
x = 10,951,039.34
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Why These Related Problems?
These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.