Finding the Fourth Proportional to 74,715.92, 111,743.16 and 66,453.68
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Solution
The fourth proportional to 74,715.92, 111,743.16 and 66,453.68 is: 99,386.37
Step by Step Solution
- Step 1: Write the proportion equation
74,715.92 : 111,743.16 = 66,453.68 : x - Step 2: Convert to fraction form
74,715.92/111,743.16 = 66,453.68/x - Step 3: Cross multiply
74,715.92x = 111,743.16 × 66,453.68 - Step 4: Simplify right side
74,715.92x = 7,425,744,196.83 - Step 5: Solve for x
x = 7,425,744,196.83/74,715.92 - Step 6: Final answer
x = 99,386.37
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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.