Finding the Fourth Proportional to 74,198.71, 102,394.58 and 40,207.19
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Solution
The fourth proportional to 74,198.71, 102,394.58 and 40,207.19 is: 55,486.12
Step by Step Solution
- Step 1: Write the proportion equation
74,198.71 : 102,394.58 = 40,207.19 : x - Step 2: Convert to fraction form
74,198.71/102,394.58 = 40,207.19/x - Step 3: Cross multiply
74,198.71x = 102,394.58 × 40,207.19 - Step 4: Simplify right side
74,198.71x = 4,116,998,305.55 - Step 5: Solve for x
x = 4,116,998,305.55/74,198.71 - Step 6: Final answer
x = 55,486.12
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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.