Finding the Fourth Proportional to 45,491,138.70, 68,236,708.05 and 28,272,450.30
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Solution
The fourth proportional to 45,491,138.70, 68,236,708.05 and 28,272,450.30 is: 42,408,675.45
Step by Step Solution
- Step 1: Write the proportion equation
45,491,138.70 : 68,236,708.05 = 28,272,450.30 : x - Step 2: Convert to fraction form
45,491,138.70/68,236,708.05 = 28,272,450.30/x - Step 3: Cross multiply
45,491,138.70x = 68,236,708.05 × 28,272,450.30 - Step 4: Simplify right side
45,491,138.70x = 1,929,218,936,979,235 - Step 5: Solve for x
x = 1,929,218,936,979,235/45,491,138.70 - Step 6: Final answer
x = 42,408,675.45
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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.