Finding the Fourth Proportional to 83,451.75, 115,163.42 and 49,917.75
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Solution
The fourth proportional to 83,451.75, 115,163.42 and 49,917.75 is: 68,886.50
Step by Step Solution
- Step 1: Write the proportion equation
83,451.75 : 115,163.42 = 49,917.75 : x - Step 2: Convert to fraction form
83,451.75/115,163.42 = 49,917.75/x - Step 3: Cross multiply
83,451.75x = 115,163.42 × 49,917.75 - Step 4: Simplify right side
83,451.75x = 5,748,698,559.12 - Step 5: Solve for x
x = 5,748,698,559.12/83,451.75 - Step 6: Final answer
x = 68,886.50
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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.