Finding the Fourth Proportional to 70,716.18, 106,048.76 and 20,782.92
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Solution
The fourth proportional to 70,716.18, 106,048.76 and 20,782.92 is: 31,166.88
Step by Step Solution
- Step 1: Write the proportion equation
70,716.18 : 106,048.76 = 20,782.92 : x - Step 2: Convert to fraction form
70,716.18/106,048.76 = 20,782.92/x - Step 3: Cross multiply
70,716.18x = 106,048.76 × 20,782.92 - Step 4: Simplify right side
70,716.18x = 2,204,002,791.26 - Step 5: Solve for x
x = 2,204,002,791.26/70,716.18 - Step 6: Final answer
x = 31,166.88
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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.