Finding the Fourth Proportional to 11,689,120.80, 16,120,542.24 and 7,338,612.60
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Solution
The fourth proportional to 11,689,120.80, 16,120,542.24 and 7,338,612.60 is: 10,120,728.19
Step by Step Solution
- Step 1: Write the proportion equation
11,689,120.80 : 16,120,542.24 = 7,338,612.60 : x - Step 2: Convert to fraction form
11,689,120.80/16,120,542.24 = 7,338,612.60/x - Step 3: Cross multiply
11,689,120.80x = 16,120,542.24 × 7,338,612.60 - Step 4: Simplify right side
11,689,120.80x = 118,302,414,401,296.22 - Step 5: Solve for x
x = 118,302,414,401,296.22/11,689,120.80 - Step 6: Final answer
x = 10,120,728.19
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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.