Finding the Fourth Proportional to 80,761,348.80, 121,142,023.20 and 48,512,721.60
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Solution
The fourth proportional to 80,761,348.80, 121,142,023.20 and 48,512,721.60 is: 72,769,082.40
Step by Step Solution
- Step 1: Write the proportion equation
80,761,348.80 : 121,142,023.20 = 48,512,721.60 : x - Step 2: Convert to fraction form
80,761,348.80/121,142,023.20 = 48,512,721.60/x - Step 3: Cross multiply
80,761,348.80x = 121,142,023.20 × 48,512,721.60 - Step 4: Simplify right side
80,761,348.80x = 5,876,929,245,562,341 - Step 5: Solve for x
x = 5,876,929,245,562,341/80,761,348.80 - Step 6: Final answer
x = 72,769,082.40
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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.