Finding the Fourth Proportional to 76,817.97, 115,243.56 and 43,553.70
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Solution
The fourth proportional to 76,817.97, 115,243.56 and 43,553.70 is: 65,339.96
Step by Step Solution
- Step 1: Write the proportion equation
76,817.97 : 115,243.56 = 43,553.70 : x - Step 2: Convert to fraction form
76,817.97/115,243.56 = 43,553.70/x - Step 3: Cross multiply
76,817.97x = 115,243.56 × 43,553.70 - Step 4: Simplify right side
76,817.97x = 5,019,283,439.17 - Step 5: Solve for x
x = 5,019,283,439.17/76,817.97 - Step 6: Final answer
x = 65,339.96
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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.