Finding the Fourth Proportional to 81,833.20, 122,749.44 and 22,668.28
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Solution
The fourth proportional to 81,833.20, 122,749.44 and 22,668.28 is: 34,002.32
Step by Step Solution
- Step 1: Write the proportion equation
81,833.20 : 122,749.44 = 22,668.28 : x - Step 2: Convert to fraction form
81,833.20/122,749.44 = 22,668.28/x - Step 3: Cross multiply
81,833.20x = 122,749.44 × 22,668.28 - Step 4: Simplify right side
81,833.20x = 2,782,518,675.76 - Step 5: Solve for x
x = 2,782,518,675.76/81,833.20 - Step 6: Final answer
x = 34,002.32
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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.