Finding the Fourth Proportional to 80,462.11, 120,691.12 and 38,371.95
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Solution
The fourth proportional to 80,462.11, 120,691.12 and 38,371.95 is: 57,556.95
Step by Step Solution
- Step 1: Write the proportion equation
80,462.11 : 120,691.12 = 38,371.95 : x - Step 2: Convert to fraction form
80,462.11/120,691.12 = 38,371.95/x - Step 3: Cross multiply
80,462.11x = 120,691.12 × 38,371.95 - Step 4: Simplify right side
80,462.11x = 4,631,153,622.08 - Step 5: Solve for x
x = 4,631,153,622.08/80,462.11 - Step 6: Final answer
x = 57,556.95
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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.