Finding the Fourth Proportional to 69,849.92, 104,791.16 and 19,930.70
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Solution
The fourth proportional to 69,849.92, 104,791.16 and 19,930.70 is: 29,900.70
Step by Step Solution
- Step 1: Write the proportion equation
69,849.92 : 104,791.16 = 19,930.70 : x - Step 2: Convert to fraction form
69,849.92/104,791.16 = 19,930.70/x - Step 3: Cross multiply
69,849.92x = 104,791.16 × 19,930.70 - Step 4: Simplify right side
69,849.92x = 2,088,561,172.61 - Step 5: Solve for x
x = 2,088,561,172.61/69,849.92 - Step 6: Final answer
x = 29,900.70
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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.