Finding the Fourth Proportional to 76,831.20, 115,254.48 and 27,571.68
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Solution
The fourth proportional to 76,831.20, 115,254.48 and 27,571.68 is: 41,360.28
Step by Step Solution
- Step 1: Write the proportion equation
76,831.20 : 115,254.48 = 27,571.68 : x - Step 2: Convert to fraction form
76,831.20/115,254.48 = 27,571.68/x - Step 3: Cross multiply
76,831.20x = 115,254.48 × 27,571.68 - Step 4: Simplify right side
76,831.20x = 3,177,759,641.13 - Step 5: Solve for x
x = 3,177,759,641.13/76,831.20 - Step 6: Final answer
x = 41,360.28
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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.