Finding the Fourth Proportional to 68,631.63, 102,944.40 and 18,711.75
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Solution
The fourth proportional to 68,631.63, 102,944.40 and 18,711.75 is: 28,066.79
Step by Step Solution
- Step 1: Write the proportion equation
68,631.63 : 102,944.40 = 18,711.75 : x - Step 2: Convert to fraction form
68,631.63/102,944.40 = 18,711.75/x - Step 3: Cross multiply
68,631.63x = 102,944.40 × 18,711.75 - Step 4: Simplify right side
68,631.63x = 1,926,269,876.70 - Step 5: Solve for x
x = 1,926,269,876.70/68,631.63 - Step 6: Final answer
x = 28,066.79
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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.