Finding the Fourth Proportional to 66,998.99, 100,367.09 and 38,859.93
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Solution
The fourth proportional to 66,998.99, 100,367.09 and 38,859.93 is: 58,213.69
Step by Step Solution
- Step 1: Write the proportion equation
66,998.99 : 100,367.09 = 38,859.93 : x - Step 2: Convert to fraction form
66,998.99/100,367.09 = 38,859.93/x - Step 3: Cross multiply
66,998.99x = 100,367.09 × 38,859.93 - Step 4: Simplify right side
66,998.99x = 3,900,257,897.40 - Step 5: Solve for x
x = 3,900,257,897.40/66,998.99 - Step 6: Final answer
x = 58,213.69
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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.