Finding the Fourth Proportional to 84,685.21, 126,917.07 and 34,706.79
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Solution
The fourth proportional to 84,685.21, 126,917.07 and 34,706.79 is: 52,014.80
Step by Step Solution
- Step 1: Write the proportion equation
84,685.21 : 126,917.07 = 34,706.79 : x - Step 2: Convert to fraction form
84,685.21/126,917.07 = 34,706.79/x - Step 3: Cross multiply
84,685.21x = 126,917.07 × 34,706.79 - Step 4: Simplify right side
84,685.21x = 4,404,884,095.91 - Step 5: Solve for x
x = 4,404,884,095.91/84,685.21 - Step 6: Final answer
x = 52,014.80
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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.