Finding the Fourth Proportional to 71,985.93, 107,981.42 and 19,396.68
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Solution
The fourth proportional to 71,985.93, 107,981.42 and 19,396.68 is: 29,095.70
Step by Step Solution
- Step 1: Write the proportion equation
71,985.93 : 107,981.42 = 19,396.68 : x - Step 2: Convert to fraction form
71,985.93/107,981.42 = 19,396.68/x - Step 3: Cross multiply
71,985.93x = 107,981.42 × 19,396.68 - Step 4: Simplify right side
71,985.93x = 2,094,481,049.69 - Step 5: Solve for x
x = 2,094,481,049.69/71,985.93 - Step 6: Final answer
x = 29,095.70
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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.