Finding the Fourth Proportional to 74,715.62, 103,105.31 and 40,725.99
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Solution
The fourth proportional to 74,715.62, 103,105.31 and 40,725.99 is: 56,200.64
Step by Step Solution
- Step 1: Write the proportion equation
74,715.62 : 103,105.31 = 40,725.99 : x - Step 2: Convert to fraction form
74,715.62/103,105.31 = 40,725.99/x - Step 3: Cross multiply
74,715.62x = 103,105.31 × 40,725.99 - Step 4: Simplify right side
74,715.62x = 4,199,065,620.38 - Step 5: Solve for x
x = 4,199,065,620.38/74,715.62 - Step 6: Final answer
x = 56,200.64
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.