Finding the Fourth Proportional to 68,609.80, 102,914.70 and 19,361.80
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Solution
The fourth proportional to 68,609.80, 102,914.70 and 19,361.80 is: 29,042.70
Step by Step Solution
- Step 1: Write the proportion equation
68,609.80 : 102,914.70 = 19,361.80 : x - Step 2: Convert to fraction form
68,609.80/102,914.70 = 19,361.80/x - Step 3: Cross multiply
68,609.80x = 102,914.70 × 19,361.80 - Step 4: Simplify right side
68,609.80x = 1,992,613,838.46 - Step 5: Solve for x
x = 1,992,613,838.46/68,609.80 - Step 6: Final answer
x = 29,042.70
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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.