Finding the Fourth Proportional to 76,412.67, 114,613.58 and 20,251.53
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Solution
The fourth proportional to 76,412.67, 114,613.58 and 20,251.53 is: 30,375.85
Step by Step Solution
- Step 1: Write the proportion equation
76,412.67 : 114,613.58 = 20,251.53 : x - Step 2: Convert to fraction form
76,412.67/114,613.58 = 20,251.53/x - Step 3: Cross multiply
76,412.67x = 114,613.58 × 20,251.53 - Step 4: Simplify right side
76,412.67x = 2,321,099,679.45 - Step 5: Solve for x
x = 2,321,099,679.45/76,412.67 - Step 6: Final answer
x = 30,375.85
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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.