Finding the Fourth Proportional to 71,813.39, 107,683.63 and 53,879.99
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Solution
The fourth proportional to 71,813.39, 107,683.63 and 53,879.99 is: 80,792.63
Step by Step Solution
- Step 1: Write the proportion equation
71,813.39 : 107,683.63 = 53,879.99 : x - Step 2: Convert to fraction form
71,813.39/107,683.63 = 53,879.99/x - Step 3: Cross multiply
71,813.39x = 107,683.63 × 53,879.99 - Step 4: Simplify right side
71,813.39x = 5,801,992,234.45 - Step 5: Solve for x
x = 5,801,992,234.45/71,813.39 - Step 6: Final answer
x = 80,792.63
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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.