Finding the Fourth Proportional to 83,731.14, 115,542.27 and 47,912.94
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Solution
The fourth proportional to 83,731.14, 115,542.27 and 47,912.94 is: 66,116.02
Step by Step Solution
- Step 1: Write the proportion equation
83,731.14 : 115,542.27 = 47,912.94 : x - Step 2: Convert to fraction form
83,731.14/115,542.27 = 47,912.94/x - Step 3: Cross multiply
83,731.14x = 115,542.27 × 47,912.94 - Step 4: Simplify right side
83,731.14x = 5,535,969,849.97 - Step 5: Solve for x
x = 5,535,969,849.97/83,731.14 - Step 6: Final answer
x = 66,116.02
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.