Finding the Fourth Proportional to 79,438,891.20, 119,158,161.62 and 21,146,582.28
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Solution
The fourth proportional to 79,438,891.20, 119,158,161.62 and 21,146,582.28 is: 31,719,826.79
Step by Step Solution
- Step 1: Write the proportion equation
79,438,891.20 : 119,158,161.62 = 21,146,582.28 : x - Step 2: Convert to fraction form
79,438,891.20/119,158,161.62 = 21,146,582.28/x - Step 3: Cross multiply
79,438,891.20x = 119,158,161.62 × 21,146,582.28 - Step 4: Simplify right side
79,438,891.20x = 2,519,787,868,925,135 - Step 5: Solve for x
x = 2,519,787,868,925,135/79,438,891.20 - Step 6: Final answer
x = 31,719,826.79
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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.