Finding the Fourth Proportional to 74,446.40, 102,736.44 and 40,455.14
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Solution
The fourth proportional to 74,446.40, 102,736.44 and 40,455.14 is: 55,828.31
Step by Step Solution
- Step 1: Write the proportion equation
74,446.40 : 102,736.44 = 40,455.14 : x - Step 2: Convert to fraction form
74,446.40/102,736.44 = 40,455.14/x - Step 3: Cross multiply
74,446.40x = 102,736.44 × 40,455.14 - Step 4: Simplify right side
74,446.40x = 4,156,217,063.30 - Step 5: Solve for x
x = 4,156,217,063.30/74,446.40 - Step 6: Final answer
x = 55,828.31
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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.