Finding the Fourth Proportional to 76,169.55, 114,253.09 and 20,765.55
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Solution
The fourth proportional to 76,169.55, 114,253.09 and 20,765.55 is: 31,147.99
Step by Step Solution
- Step 1: Write the proportion equation
76,169.55 : 114,253.09 = 20,765.55 : x - Step 2: Convert to fraction form
76,169.55/114,253.09 = 20,765.55/x - Step 3: Cross multiply
76,169.55x = 114,253.09 × 20,765.55 - Step 4: Simplify right side
76,169.55x = 2,372,528,253.05 - Step 5: Solve for x
x = 2,372,528,253.05/76,169.55 - Step 6: Final answer
x = 31,147.99
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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.