Finding the Fourth Proportional to 71,779.87, 107,661.60 and 19,193.46
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Solution
The fourth proportional to 71,779.87, 107,661.60 and 19,193.46 is: 28,787.99
Step by Step Solution
- Step 1: Write the proportion equation
71,779.87 : 107,661.60 = 19,193.46 : x - Step 2: Convert to fraction form
71,779.87/107,661.60 = 19,193.46/x - Step 3: Cross multiply
71,779.87x = 107,661.60 × 19,193.46 - Step 4: Simplify right side
71,779.87x = 2,066,398,475.83 - Step 5: Solve for x
x = 2,066,398,475.83/71,779.87 - Step 6: Final answer
x = 28,787.99
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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.