Finding the Fourth Proportional to 80,679.47, 120,998.63 and 57,207.49
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Solution
The fourth proportional to 80,679.47, 120,998.63 and 57,207.49 is: 85,796.65
Step by Step Solution
- Step 1: Write the proportion equation
80,679.47 : 120,998.63 = 57,207.49 : x - Step 2: Convert to fraction form
80,679.47/120,998.63 = 57,207.49/x - Step 3: Cross multiply
80,679.47x = 120,998.63 × 57,207.49 - Step 4: Simplify right side
80,679.47x = 6,922,027,756.26 - Step 5: Solve for x
x = 6,922,027,756.26/80,679.47 - Step 6: Final answer
x = 85,796.65
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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.