Finding the Fourth Proportional to 57,474,198.72, 79,313,269.92 and 31,368,903.60
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Solution
The fourth proportional to 57,474,198.72, 79,313,269.92 and 31,368,903.60 is: 43,288,473.33
Step by Step Solution
- Step 1: Write the proportion equation
57,474,198.72 : 79,313,269.92 = 31,368,903.60 : x - Step 2: Convert to fraction form
57,474,198.72/79,313,269.92 = 31,368,903.60/x - Step 3: Cross multiply
57,474,198.72x = 79,313,269.92 × 31,368,903.60 - Step 4: Simplify right side
57,474,198.72x = 2,487,970,318,321,260 - Step 5: Solve for x
x = 2,487,970,318,321,260/57,474,198.72 - Step 6: Final answer
x = 43,288,473.33
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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.