Finding the Fourth Proportional to 78,126.75, 117,209.97 and 22,722.75
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Solution
The fourth proportional to 78,126.75, 117,209.97 and 22,722.75 is: 34,089.90
Step by Step Solution
- Step 1: Write the proportion equation
78,126.75 : 117,209.97 = 22,722.75 : x - Step 2: Convert to fraction form
78,126.75/117,209.97 = 22,722.75/x - Step 3: Cross multiply
78,126.75x = 117,209.97 × 22,722.75 - Step 4: Simplify right side
78,126.75x = 2,663,332,845.82 - Step 5: Solve for x
x = 2,663,332,845.82/78,126.75 - Step 6: Final answer
x = 34,089.90
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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.