Finding the Fourth Proportional to 68,651.62, 102,974.36 and 18,731.55
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Solution
The fourth proportional to 68,651.62, 102,974.36 and 18,731.55 is: 28,096.49
Step by Step Solution
- Step 1: Write the proportion equation
68,651.62 : 102,974.36 = 18,731.55 : x - Step 2: Convert to fraction form
68,651.62/102,974.36 = 18,731.55/x - Step 3: Cross multiply
68,651.62x = 102,974.36 × 18,731.55 - Step 4: Simplify right side
68,651.62x = 1,928,869,665.55 - Step 5: Solve for x
x = 1,928,869,665.55/68,651.62 - Step 6: Final answer
x = 28,096.49
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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.