Finding the Fourth Proportional to 80,879.90, 121,315.44 and 24,719.99
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Solution
The fourth proportional to 80,879.90, 121,315.44 and 24,719.99 is: 37,078.64
Step by Step Solution
- Step 1: Write the proportion equation
80,879.90 : 121,315.44 = 24,719.99 : x - Step 2: Convert to fraction form
80,879.90/121,315.44 = 24,719.99/x - Step 3: Cross multiply
80,879.90x = 121,315.44 × 24,719.99 - Step 4: Simplify right side
80,879.90x = 2,998,916,340.05 - Step 5: Solve for x
x = 2,998,916,340.05/80,879.90 - Step 6: Final answer
x = 37,078.64
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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.