Finding the Fourth Proportional to 80,438.13, 120,702.60 and 79,803.09
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Solution
The fourth proportional to 80,438.13, 120,702.60 and 79,803.09 is: 119,749.68
Step by Step Solution
- Step 1: Write the proportion equation
80,438.13 : 120,702.60 = 79,803.09 : x - Step 2: Convert to fraction form
80,438.13/120,702.60 = 79,803.09/x - Step 3: Cross multiply
80,438.13x = 120,702.60 × 79,803.09 - Step 4: Simplify right side
80,438.13x = 9,632,440,451.03 - Step 5: Solve for x
x = 9,632,440,451.03/80,438.13 - Step 6: Final answer
x = 119,749.68
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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.