Finding the Fourth Proportional to 84,069.96, 126,107.58 and 31,469.40
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Solution
The fourth proportional to 84,069.96, 126,107.58 and 31,469.40 is: 47,205.09
Step by Step Solution
- Step 1: Write the proportion equation
84,069.96 : 126,107.58 = 31,469.40 : x - Step 2: Convert to fraction form
84,069.96/126,107.58 = 31,469.40/x - Step 3: Cross multiply
84,069.96x = 126,107.58 × 31,469.40 - Step 4: Simplify right side
84,069.96x = 3,968,529,878.05 - Step 5: Solve for x
x = 3,968,529,878.05/84,069.96 - Step 6: Final answer
x = 47,205.09
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1.5x scale
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.