Finding the Fourth Proportional to 76,048.67, 104,821.39 and 57,152.99
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Solution
The fourth proportional to 76,048.67, 104,821.39 and 57,152.99 is: 78,776.60
Step by Step Solution
- Step 1: Write the proportion equation
76,048.67 : 104,821.39 = 57,152.99 : x - Step 2: Convert to fraction form
76,048.67/104,821.39 = 57,152.99/x - Step 3: Cross multiply
76,048.67x = 104,821.39 × 57,152.99 - Step 4: Simplify right side
76,048.67x = 5,990,856,187.95 - Step 5: Solve for x
x = 5,990,856,187.95/76,048.67 - Step 6: Final answer
x = 78,776.60
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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.