Finding the Fourth Proportional to 80,697.87, 121,047.41 and 28,107.20
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Solution
The fourth proportional to 80,697.87, 121,047.41 and 28,107.20 is: 42,161.02
Step by Step Solution
- Step 1: Write the proportion equation
80,697.87 : 121,047.41 = 28,107.20 : x - Step 2: Convert to fraction form
80,697.87/121,047.41 = 28,107.20/x - Step 3: Cross multiply
80,697.87x = 121,047.41 × 28,107.20 - Step 4: Simplify right side
80,697.87x = 3,402,304,135.24 - Step 5: Solve for x
x = 3,402,304,135.24/80,697.87 - Step 6: Final answer
x = 42,161.02
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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.