Finding the Fourth Proportional to 80,496,586.20, 120,744,879.30 and 57,989,731.80
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Solution
The fourth proportional to 80,496,586.20, 120,744,879.30 and 57,989,731.80 is: 86,984,597.70
Step by Step Solution
- Step 1: Write the proportion equation
80,496,586.20 : 120,744,879.30 = 57,989,731.80 : x - Step 2: Convert to fraction form
80,496,586.20/120,744,879.30 = 57,989,731.80/x - Step 3: Cross multiply
80,496,586.20x = 120,744,879.30 × 57,989,731.80 - Step 4: Simplify right side
80,496,586.20x = 7,001,963,166,830,371 - Step 5: Solve for x
x = 7,001,963,166,830,371/80,496,586.20 - Step 6: Final answer
x = 86,984,597.70
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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.