Finding the Fourth Proportional to 87,879.24, 121,273.38 and 48,135.24
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Solution
The fourth proportional to 87,879.24, 121,273.38 and 48,135.24 is: 66,426.65
Step by Step Solution
- Step 1: Write the proportion equation
87,879.24 : 121,273.38 = 48,135.24 : x - Step 2: Convert to fraction form
87,879.24/121,273.38 = 48,135.24/x - Step 3: Cross multiply
87,879.24x = 121,273.38 × 48,135.24 - Step 4: Simplify right side
87,879.24x = 5,837,523,251.91 - Step 5: Solve for x
x = 5,837,523,251.91/87,879.24 - Step 6: Final answer
x = 66,426.65
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.