Finding the Fourth Proportional to 81,967.21, 122,981.79 and 32,082.95
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Solution
The fourth proportional to 81,967.21, 122,981.79 and 32,082.95 is: 48,136.56
Step by Step Solution
- Step 1: Write the proportion equation
81,967.21 : 122,981.79 = 32,082.95 : x - Step 2: Convert to fraction form
81,967.21/122,981.79 = 32,082.95/x - Step 3: Cross multiply
81,967.21x = 122,981.79 × 32,082.95 - Step 4: Simplify right side
81,967.21x = 3,945,619,047.25 - Step 5: Solve for x
x = 3,945,619,047.25/81,967.21 - Step 6: Final answer
x = 48,136.56
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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.