Finding the Fourth Proportional to 102,831.53, 141,906.53 and 57,508.99
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Solution
The fourth proportional to 102,831.53, 141,906.53 and 57,508.99 is: 79,361.86
Step by Step Solution
- Step 1: Write the proportion equation
102,831.53 : 141,906.53 = 57,508.99 : x - Step 2: Convert to fraction form
102,831.53/141,906.53 = 57,508.99/x - Step 3: Cross multiply
102,831.53x = 141,906.53 × 57,508.99 - Step 4: Simplify right side
102,831.53x = 8,160,901,003.71 - Step 5: Solve for x
x = 8,160,901,003.71/102,831.53 - Step 6: Final answer
x = 79,361.86
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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.