Finding the Fourth Proportional to 83,912.12, 115,789.99 and 47,601.99
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Solution
The fourth proportional to 83,912.12, 115,789.99 and 47,601.99 is: 65,685.80
Step by Step Solution
- Step 1: Write the proportion equation
83,912.12 : 115,789.99 = 47,601.99 : x - Step 2: Convert to fraction form
83,912.12/115,789.99 = 47,601.99/x - Step 3: Cross multiply
83,912.12x = 115,789.99 × 47,601.99 - Step 4: Simplify right side
83,912.12x = 5,511,834,268.92 - Step 5: Solve for x
x = 5,511,834,268.92/83,912.12 - Step 6: Final answer
x = 65,685.80
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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.