Finding the Fourth Proportional to 76,119.51, 104,975.52 and 65,360.99
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Solution
The fourth proportional to 76,119.51, 104,975.52 and 65,360.99 is: 90,138.56
Step by Step Solution
- Step 1: Write the proportion equation
76,119.51 : 104,975.52 = 65,360.99 : x - Step 2: Convert to fraction form
76,119.51/104,975.52 = 65,360.99/x - Step 3: Cross multiply
76,119.51x = 104,975.52 × 65,360.99 - Step 4: Simplify right side
76,119.51x = 6,861,303,388.09 - Step 5: Solve for x
x = 6,861,303,388.09/76,119.51 - Step 6: Final answer
x = 90,138.56
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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.