Finding the Fourth Proportional to 74,453.10, 111,678.75 and 21,860.70
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Solution
The fourth proportional to 74,453.10, 111,678.75 and 21,860.70 is: 32,790.79
Step by Step Solution
- Step 1: Write the proportion equation
74,453.10 : 111,678.75 = 21,860.70 : x - Step 2: Convert to fraction form
74,453.10/111,678.75 = 21,860.70/x - Step 3: Cross multiply
74,453.10x = 111,678.75 × 21,860.70 - Step 4: Simplify right side
74,453.10x = 2,441,375,650.13 - Step 5: Solve for x
x = 2,441,375,650.13/74,453.10 - Step 6: Final answer
x = 32,790.79
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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.