Finding the Fourth Proportional to 91,129.42, 136,678.36 and 41,197.90
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Solution
The fourth proportional to 91,129.42, 136,678.36 and 41,197.90 is: 61,789.72
Step by Step Solution
- Step 1: Write the proportion equation
91,129.42 : 136,678.36 = 41,197.90 : x - Step 2: Convert to fraction form
91,129.42/136,678.36 = 41,197.90/x - Step 3: Cross multiply
91,129.42x = 136,678.36 × 41,197.90 - Step 4: Simplify right side
91,129.42x = 5,630,861,407.44 - Step 5: Solve for x
x = 5,630,861,407.44/91,129.42 - Step 6: Final answer
x = 61,789.72
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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.