Finding the Fourth Proportional to 78,049.24, 107,618.17 and 57,660.81
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Solution
The fourth proportional to 78,049.24, 107,618.17 and 57,660.81 is: 79,505.59
Step by Step Solution
- Step 1: Write the proportion equation
78,049.24 : 107,618.17 = 57,660.81 : x - Step 2: Convert to fraction form
78,049.24/107,618.17 = 57,660.81/x - Step 3: Cross multiply
78,049.24x = 107,618.17 × 57,660.81 - Step 4: Simplify right side
78,049.24x = 6,205,350,852.92 - Step 5: Solve for x
x = 6,205,350,852.92/78,049.24 - Step 6: Final answer
x = 79,505.59
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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.