Finding the Fourth Proportional to 81,460.05, 122,206.38 and 28,153.99
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Solution
The fourth proportional to 81,460.05, 122,206.38 and 28,153.99 is: 42,236.62
Step by Step Solution
- Step 1: Write the proportion equation
81,460.05 : 122,206.38 = 28,153.99 : x - Step 2: Convert to fraction form
81,460.05/122,206.38 = 28,153.99/x - Step 3: Cross multiply
81,460.05x = 122,206.38 × 28,153.99 - Step 4: Simplify right side
81,460.05x = 3,440,597,200.46 - Step 5: Solve for x
x = 3,440,597,200.46/81,460.05 - Step 6: Final answer
x = 42,236.62
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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.