Finding the Fourth Proportional to 74,715.13, 103,106.96 and 40,723.65
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Solution
The fourth proportional to 74,715.13, 103,106.96 and 40,723.65 is: 56,198.68
Step by Step Solution
- Step 1: Write the proportion equation
74,715.13 : 103,106.96 = 40,723.65 : x - Step 2: Convert to fraction form
74,715.13/103,106.96 = 40,723.65/x - Step 3: Cross multiply
74,715.13x = 103,106.96 × 40,723.65 - Step 4: Simplify right side
74,715.13x = 4,198,891,700.70 - Step 5: Solve for x
x = 4,198,891,700.70/74,715.13 - Step 6: Final answer
x = 56,198.68
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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.