Finding the Fourth Proportional to 80,208.15, 120,059.51 and 71,754.99
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Solution
The fourth proportional to 80,208.15, 120,059.51 and 71,754.99 is: 107,406.40
Step by Step Solution
- Step 1: Write the proportion equation
80,208.15 : 120,059.51 = 71,754.99 : x - Step 2: Convert to fraction form
80,208.15/120,059.51 = 71,754.99/x - Step 3: Cross multiply
80,208.15x = 120,059.51 × 71,754.99 - Step 4: Simplify right side
80,208.15x = 8,614,868,580.68 - Step 5: Solve for x
x = 8,614,868,580.68/80,208.15 - Step 6: Final answer
x = 107,406.40
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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.