Finding the Fourth Proportional to 74,143.20, 111,161.97 and 34,678.80
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Solution
The fourth proportional to 74,143.20, 111,161.97 and 34,678.80 is: 51,993.49
Step by Step Solution
- Step 1: Write the proportion equation
74,143.20 : 111,161.97 = 34,678.80 : x - Step 2: Convert to fraction form
74,143.20/111,161.97 = 34,678.80/x - Step 3: Cross multiply
74,143.20x = 111,161.97 × 34,678.80 - Step 4: Simplify right side
74,143.20x = 3,854,963,725.24 - Step 5: Solve for x
x = 3,854,963,725.24/74,143.20 - Step 6: Final answer
x = 51,993.49
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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.