Finding the Fourth Proportional to 83,790.75, 115,619.21 and 49,314.99
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Solution
The fourth proportional to 83,790.75, 115,619.21 and 49,314.99 is: 68,047.61
Step by Step Solution
- Step 1: Write the proportion equation
83,790.75 : 115,619.21 = 49,314.99 : x - Step 2: Convert to fraction form
83,790.75/115,619.21 = 49,314.99/x - Step 3: Cross multiply
83,790.75x = 115,619.21 × 49,314.99 - Step 4: Simplify right side
83,790.75x = 5,701,760,184.96 - Step 5: Solve for x
x = 5,701,760,184.96/83,790.75 - Step 6: Final answer
x = 68,047.61
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.