Finding the Fourth Proportional to 74,731.17, 112,129.77 and 39,183.99
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Solution
The fourth proportional to 74,731.17, 112,129.77 and 39,183.99 is: 58,793.30
Step by Step Solution
- Step 1: Write the proportion equation
74,731.17 : 112,129.77 = 39,183.99 : x - Step 2: Convert to fraction form
74,731.17/112,129.77 = 39,183.99/x - Step 3: Cross multiply
74,731.17x = 112,129.77 × 39,183.99 - Step 4: Simplify right side
74,731.17x = 4,393,691,786.38 - Step 5: Solve for x
x = 4,393,691,786.38/74,731.17 - Step 6: Final answer
x = 58,793.30
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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.