Finding the Fourth Proportional to 84,287.22, 126,449.28 and 31,696.70
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Solution
The fourth proportional to 84,287.22, 126,449.28 and 31,696.70 is: 47,551.99
Step by Step Solution
- Step 1: Write the proportion equation
84,287.22 : 126,449.28 = 31,696.70 : x - Step 2: Convert to fraction form
84,287.22/126,449.28 = 31,696.70/x - Step 3: Cross multiply
84,287.22x = 126,449.28 × 31,696.70 - Step 4: Simplify right side
84,287.22x = 4,008,024,893.38 - Step 5: Solve for x
x = 4,008,024,893.38/84,287.22 - Step 6: Final answer
x = 47,551.99
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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.