Finding the Fourth Proportional to 31,644,073.20, 47,340,138.60 and 27,431,036.40
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Solution
The fourth proportional to 31,644,073.20, 47,340,138.60 and 27,431,036.40 is: 41,037,354.99
Step by Step Solution
- Step 1: Write the proportion equation
31,644,073.20 : 47,340,138.60 = 27,431,036.40 : x - Step 2: Convert to fraction form
31,644,073.20/47,340,138.60 = 27,431,036.40/x - Step 3: Cross multiply
31,644,073.20x = 47,340,138.60 × 27,431,036.40 - Step 4: Simplify right side
31,644,073.20x = 1,298,589,065,117,645 - Step 5: Solve for x
x = 1,298,589,065,117,645/31,644,073.20 - Step 6: Final answer
x = 41,037,354.99
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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.