Finding the Fourth Proportional to 81,777.75, 122,635.49 and 53,690.29
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Solution
The fourth proportional to 81,777.75, 122,635.49 and 53,690.29 is: 80,514.99
Step by Step Solution
- Step 1: Write the proportion equation
81,777.75 : 122,635.49 = 53,690.29 : x - Step 2: Convert to fraction form
81,777.75/122,635.49 = 53,690.29/x - Step 3: Cross multiply
81,777.75x = 122,635.49 × 53,690.29 - Step 4: Simplify right side
81,777.75x = 6,584,334,955.28 - Step 5: Solve for x
x = 6,584,334,955.28/81,777.75 - Step 6: Final answer
x = 80,514.99
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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.