Finding the Fourth Proportional to 128,791.44, 193,199.44 and 40,021.04
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Solution
The fourth proportional to 128,791.44, 193,199.44 and 40,021.04 is: 60,035.38
Step by Step Solution
- Step 1: Write the proportion equation
128,791.44 : 193,199.44 = 40,021.04 : x - Step 2: Convert to fraction form
128,791.44/193,199.44 = 40,021.04/x - Step 3: Cross multiply
128,791.44x = 193,199.44 × 40,021.04 - Step 4: Simplify right side
128,791.44x = 7,732,042,516.22 - Step 5: Solve for x
x = 7,732,042,516.22/128,791.44 - Step 6: Final answer
x = 60,035.38
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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.