Finding the Fourth Proportional to 81,593.94, 122,391.99 and 31,676.88
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Solution
The fourth proportional to 81,593.94, 122,391.99 and 31,676.88 is: 47,515.74
Step by Step Solution
- Step 1: Write the proportion equation
81,593.94 : 122,391.99 = 31,676.88 : x - Step 2: Convert to fraction form
81,593.94/122,391.99 = 31,676.88/x - Step 3: Cross multiply
81,593.94x = 122,391.99 × 31,676.88 - Step 4: Simplify right side
81,593.94x = 3,876,996,380.19 - Step 5: Solve for x
x = 3,876,996,380.19/81,593.94 - Step 6: Final answer
x = 47,515.74
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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.