Finding the Fourth Proportional to 75,138.49, 112,751.70 and 27,786.90
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Solution
The fourth proportional to 75,138.49, 112,751.70 and 27,786.90 is: 41,696.61
Step by Step Solution
- Step 1: Write the proportion equation
75,138.49 : 112,751.70 = 27,786.90 : x - Step 2: Convert to fraction form
75,138.49/112,751.70 = 27,786.90/x - Step 3: Cross multiply
75,138.49x = 112,751.70 × 27,786.90 - Step 4: Simplify right side
75,138.49x = 3,133,019,897.12 - Step 5: Solve for x
x = 3,133,019,897.12/75,138.49 - Step 6: Final answer
x = 41,696.61
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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.