Finding the Fourth Proportional to 69,786.63, 104,677.47 and 19,866.99
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Solution
The fourth proportional to 69,786.63, 104,677.47 and 19,866.99 is: 29,799.78
Step by Step Solution
- Step 1: Write the proportion equation
69,786.63 : 104,677.47 = 19,866.99 : x - Step 2: Convert to fraction form
69,786.63/104,677.47 = 19,866.99/x - Step 3: Cross multiply
69,786.63x = 104,677.47 × 19,866.99 - Step 4: Simplify right side
69,786.63x = 2,079,626,249.72 - Step 5: Solve for x
x = 2,079,626,249.72/69,786.63 - Step 6: Final answer
x = 29,799.78
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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.