Finding the Fourth Proportional to 90,105.21, 124,340.18 and 49,816.62
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Solution
The fourth proportional to 90,105.21, 124,340.18 and 49,816.62 is: 68,744.17
Step by Step Solution
- Step 1: Write the proportion equation
90,105.21 : 124,340.18 = 49,816.62 : x - Step 2: Convert to fraction form
90,105.21/124,340.18 = 49,816.62/x - Step 3: Cross multiply
90,105.21x = 124,340.18 × 49,816.62 - Step 4: Simplify right side
90,105.21x = 6,194,207,714.98 - Step 5: Solve for x
x = 6,194,207,714.98/90,105.21 - Step 6: Final answer
x = 68,744.17
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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.