Finding the Fourth Proportional to 68,684.99, 102,989.63 and 21,286.94
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Solution
The fourth proportional to 68,684.99, 102,989.63 and 21,286.94 is: 31,918.67
Step by Step Solution
- Step 1: Write the proportion equation
68,684.99 : 102,989.63 = 21,286.94 : x - Step 2: Convert to fraction form
68,684.99/102,989.63 = 21,286.94/x - Step 3: Cross multiply
68,684.99x = 102,989.63 × 21,286.94 - Step 4: Simplify right side
68,684.99x = 2,192,333,453.05 - Step 5: Solve for x
x = 2,192,333,453.05/68,684.99 - Step 6: Final answer
x = 31,918.67
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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.