Finding the Fourth Proportional to 74,578.26, 102,956.09 and 57,544.23
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Solution
The fourth proportional to 74,578.26, 102,956.09 and 57,544.23 is: 79,440.42
Step by Step Solution
- Step 1: Write the proportion equation
74,578.26 : 102,956.09 = 57,544.23 : x - Step 2: Convert to fraction form
74,578.26/102,956.09 = 57,544.23/x - Step 3: Cross multiply
74,578.26x = 102,956.09 × 57,544.23 - Step 4: Simplify right side
74,578.26x = 5,924,528,635.14 - Step 5: Solve for x
x = 5,924,528,635.14/74,578.26 - Step 6: Final answer
x = 79,440.42
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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.