Finding the Fourth Proportional to 87,965.85, 121,391.56 and 49,724.06
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Solution
The fourth proportional to 87,965.85, 121,391.56 and 49,724.06 is: 68,618.45
Step by Step Solution
- Step 1: Write the proportion equation
87,965.85 : 121,391.56 = 49,724.06 : x - Step 2: Convert to fraction form
87,965.85/121,391.56 = 49,724.06/x - Step 3: Cross multiply
87,965.85x = 121,391.56 × 49,724.06 - Step 4: Simplify right side
87,965.85x = 6,036,080,668.13 - Step 5: Solve for x
x = 6,036,080,668.13/87,965.85 - Step 6: Final answer
x = 68,618.45
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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.