Finding the Fourth Proportional to 99,647,919.40, 149,471,879.10 and 31,490,611.15
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Solution
The fourth proportional to 99,647,919.40, 149,471,879.10 and 31,490,611.15 is: 47,235,916.73
Step by Step Solution
- Step 1: Write the proportion equation
99,647,919.40 : 149,471,879.10 = 31,490,611.15 : x - Step 2: Convert to fraction form
99,647,919.40/149,471,879.10 = 31,490,611.15/x - Step 3: Cross multiply
99,647,919.40x = 149,471,879.10 × 31,490,611.15 - Step 4: Simplify right side
99,647,919.40x = 4,706,960,822,597,912 - Step 5: Solve for x
x = 4,706,960,822,597,912/99,647,919.40 - Step 6: Final answer
x = 47,235,916.73
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.