Finding the Fourth Proportional to 81,604.80, 122,428.80 and 29,008.80
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Solution
The fourth proportional to 81,604.80, 122,428.80 and 29,008.80 is: 43,520.88
Step by Step Solution
- Step 1: Write the proportion equation
81,604.80 : 122,428.80 = 29,008.80 : x - Step 2: Convert to fraction form
81,604.80/122,428.80 = 29,008.80/x - Step 3: Cross multiply
81,604.80x = 122,428.80 × 29,008.80 - Step 4: Simplify right side
81,604.80x = 3,551,512,573.44 - Step 5: Solve for x
x = 3,551,512,573.44/81,604.80 - Step 6: Final answer
x = 43,520.88
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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.