Finding the Fourth Proportional to 84,120.95, 126,134.15 and 27,930.99
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Solution
The fourth proportional to 84,120.95, 126,134.15 and 27,930.99 is: 41,880.79
Step by Step Solution
- Step 1: Write the proportion equation
84,120.95 : 126,134.15 = 27,930.99 : x - Step 2: Convert to fraction form
84,120.95/126,134.15 = 27,930.99/x - Step 3: Cross multiply
84,120.95x = 126,134.15 × 27,930.99 - Step 4: Simplify right side
84,120.95x = 3,523,051,542.65 - Step 5: Solve for x
x = 3,523,051,542.65/84,120.95 - Step 6: Final answer
x = 41,880.79
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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.