Finding the Fourth Proportional to 66,657.67, 100,011.21 and 31,138.97
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Solution
The fourth proportional to 66,657.67, 100,011.21 and 31,138.97 is: 46,719.99
Step by Step Solution
- Step 1: Write the proportion equation
66,657.67 : 100,011.21 = 31,138.97 : x - Step 2: Convert to fraction form
66,657.67/100,011.21 = 31,138.97/x - Step 3: Cross multiply
66,657.67x = 100,011.21 × 31,138.97 - Step 4: Simplify right side
66,657.67x = 3,114,245,451.03 - Step 5: Solve for x
x = 3,114,245,451.03/66,657.67 - Step 6: Final answer
x = 46,719.99
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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.