Finding the Fourth Proportional to 81,910.68, 122,895.06 and 46,879.80
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Solution
The fourth proportional to 81,910.68, 122,895.06 and 46,879.80 is: 70,336.32
Step by Step Solution
- Step 1: Write the proportion equation
81,910.68 : 122,895.06 = 46,879.80 : x - Step 2: Convert to fraction form
81,910.68/122,895.06 = 46,879.80/x - Step 3: Cross multiply
81,910.68x = 122,895.06 × 46,879.80 - Step 4: Simplify right side
81,910.68x = 5,761,295,833.79 - Step 5: Solve for x
x = 5,761,295,833.79/81,910.68 - Step 6: Final answer
x = 70,336.32
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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.