Finding the Fourth Proportional to 75,176,079.20, 112,764,118.80 and 51,288,207.20
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Solution
The fourth proportional to 75,176,079.20, 112,764,118.80 and 51,288,207.20 is: 76,932,310.80
Step by Step Solution
- Step 1: Write the proportion equation
75,176,079.20 : 112,764,118.80 = 51,288,207.20 : x - Step 2: Convert to fraction form
75,176,079.20/112,764,118.80 = 51,288,207.20/x - Step 3: Cross multiply
75,176,079.20x = 112,764,118.80 × 51,288,207.20 - Step 4: Simplify right side
75,176,079.20x = 5,783,469,489,739,816 - Step 5: Solve for x
x = 5,783,469,489,739,816/75,176,079.20 - Step 6: Final answer
x = 76,932,310.80
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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.