Finding the Fourth Proportional to 84,112.96, 126,205.76 and 31,515.84
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Solution
The fourth proportional to 84,112.96, 126,205.76 and 31,515.84 is: 47,287.37
Step by Step Solution
- Step 1: Write the proportion equation
84,112.96 : 126,205.76 = 31,515.84 : x - Step 2: Convert to fraction form
84,112.96/126,205.76 = 31,515.84/x - Step 3: Cross multiply
84,112.96x = 126,205.76 × 31,515.84 - Step 4: Simplify right side
84,112.96x = 3,977,480,539.24 - Step 5: Solve for x
x = 3,977,480,539.24/84,112.96 - Step 6: Final answer
x = 47,287.37
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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.