Finding the Fourth Proportional to 76,762.68, 115,135.92 and 20,608.62
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Solution
The fourth proportional to 76,762.68, 115,135.92 and 20,608.62 is: 30,910.76
Step by Step Solution
- Step 1: Write the proportion equation
76,762.68 : 115,135.92 = 20,608.62 : x - Step 2: Convert to fraction form
76,762.68/115,135.92 = 20,608.62/x - Step 3: Cross multiply
76,762.68x = 115,135.92 × 20,608.62 - Step 4: Simplify right side
76,762.68x = 2,372,792,423.63 - Step 5: Solve for x
x = 2,372,792,423.63/76,762.68 - Step 6: Final answer
x = 30,910.76
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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.