Finding the Fourth Proportional to 77,729.20, 116,593.80 and 68,543.80
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Solution
The fourth proportional to 77,729.20, 116,593.80 and 68,543.80 is: 102,815.70
Step by Step Solution
- Step 1: Write the proportion equation
77,729.20 : 116,593.80 = 68,543.80 : x - Step 2: Convert to fraction form
77,729.20/116,593.80 = 68,543.80/x - Step 3: Cross multiply
77,729.20x = 116,593.80 × 68,543.80 - Step 4: Simplify right side
77,729.20x = 7,991,782,108.44 - Step 5: Solve for x
x = 7,991,782,108.44/77,729.20 - Step 6: Final answer
x = 102,815.70
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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.