Finding the Fourth Proportional to 80,745,292.20, 120,973,596.30 and 49,138,768.20
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Solution
The fourth proportional to 80,745,292.20, 120,973,596.30 and 49,138,768.20 is: 73,620,310.79
Step by Step Solution
- Step 1: Write the proportion equation
80,745,292.20 : 120,973,596.30 = 49,138,768.20 : x - Step 2: Convert to fraction form
80,745,292.20/120,973,596.30 = 49,138,768.20/x - Step 3: Cross multiply
80,745,292.20x = 120,973,596.30 × 49,138,768.20 - Step 4: Simplify right side
80,745,292.20x = 5,944,493,506,906,078 - Step 5: Solve for x
x = 5,944,493,506,906,078/80,745,292.20 - Step 6: Final answer
x = 73,620,310.79
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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.