Finding the Fourth Proportional to 80,879,276.40, 121,318,914.60 and 53,669,497.20
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Solution
The fourth proportional to 80,879,276.40, 121,318,914.60 and 53,669,497.20 is: 80,504,245.80
Step by Step Solution
- Step 1: Write the proportion equation
80,879,276.40 : 121,318,914.60 = 53,669,497.20 : x - Step 2: Convert to fraction form
80,879,276.40/121,318,914.60 = 53,669,497.20/x - Step 3: Cross multiply
80,879,276.40x = 121,318,914.60 × 53,669,497.20 - Step 4: Simplify right side
80,879,276.40x = 6,511,125,147,431,739 - Step 5: Solve for x
x = 6,511,125,147,431,739/80,879,276.40 - Step 6: Final answer
x = 80,504,245.80
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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.