Finding the Fourth Proportional to 74,286.40, 102,514.62 and 40,294.80
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Solution
The fourth proportional to 74,286.40, 102,514.62 and 40,294.80 is: 55,606.49
Step by Step Solution
- Step 1: Write the proportion equation
74,286.40 : 102,514.62 = 40,294.80 : x - Step 2: Convert to fraction form
74,286.40/102,514.62 = 40,294.80/x - Step 3: Cross multiply
74,286.40x = 102,514.62 × 40,294.80 - Step 4: Simplify right side
74,286.40x = 4,130,805,859.43 - Step 5: Solve for x
x = 4,130,805,859.43/74,286.40 - Step 6: Final answer
x = 55,606.49
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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.