Finding the Fourth Proportional to 81,860.93, 122,791.42 and 36,829.70
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Solution
The fourth proportional to 81,860.93, 122,791.42 and 36,829.70 is: 55,244.56
Step by Step Solution
- Step 1: Write the proportion equation
81,860.93 : 122,791.42 = 36,829.70 : x - Step 2: Convert to fraction form
81,860.93/122,791.42 = 36,829.70/x - Step 3: Cross multiply
81,860.93x = 122,791.42 × 36,829.70 - Step 4: Simplify right side
81,860.93x = 4,522,371,161.17 - Step 5: Solve for x
x = 4,522,371,161.17/81,860.93 - Step 6: Final answer
x = 55,244.56
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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.