Finding the Fourth Proportional to 80,646.26, 120,989.76 and 57,000.28
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Solution
The fourth proportional to 80,646.26, 120,989.76 and 57,000.28 is: 85,514.82
Step by Step Solution
- Step 1: Write the proportion equation
80,646.26 : 120,989.76 = 57,000.28 : x - Step 2: Convert to fraction form
80,646.26/120,989.76 = 57,000.28/x - Step 3: Cross multiply
80,646.26x = 120,989.76 × 57,000.28 - Step 4: Simplify right side
80,646.26x = 6,896,450,197.13 - Step 5: Solve for x
x = 6,896,450,197.13/80,646.26 - Step 6: Final answer
x = 85,514.82
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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.