Finding the Fourth Proportional to 71,771.29, 107,673.32 and 21,858.46
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Solution
The fourth proportional to 71,771.29, 107,673.32 and 21,858.46 is: 32,792.68
Step by Step Solution
- Step 1: Write the proportion equation
71,771.29 : 107,673.32 = 21,858.46 : x - Step 2: Convert to fraction form
71,771.29/107,673.32 = 21,858.46/x - Step 3: Cross multiply
71,771.29x = 107,673.32 × 21,858.46 - Step 4: Simplify right side
71,771.29x = 2,353,572,958.29 - Step 5: Solve for x
x = 2,353,572,958.29/71,771.29 - Step 6: Final answer
x = 32,792.68
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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.