Finding the Fourth Proportional to 77,278.36, 115,920.42 and 27,363.72
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Solution
The fourth proportional to 77,278.36, 115,920.42 and 27,363.72 is: 41,046.60
Step by Step Solution
- Step 1: Write the proportion equation
77,278.36 : 115,920.42 = 27,363.72 : x - Step 2: Convert to fraction form
77,278.36/115,920.42 = 27,363.72/x - Step 3: Cross multiply
77,278.36x = 115,920.42 × 27,363.72 - Step 4: Simplify right side
77,278.36x = 3,172,013,915.16 - Step 5: Solve for x
x = 3,172,013,915.16/77,278.36 - Step 6: Final answer
x = 41,046.60
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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.