Finding the Fourth Proportional to 67,229.20, 100,820.19 and 19,831.68
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Solution
The fourth proportional to 67,229.20, 100,820.19 and 19,831.68 is: 29,740.56
Step by Step Solution
- Step 1: Write the proportion equation
67,229.20 : 100,820.19 = 19,831.68 : x - Step 2: Convert to fraction form
67,229.20/100,820.19 = 19,831.68/x - Step 3: Cross multiply
67,229.20x = 100,820.19 × 19,831.68 - Step 4: Simplify right side
67,229.20x = 1,999,433,745.62 - Step 5: Solve for x
x = 1,999,433,745.62/67,229.20 - Step 6: Final answer
x = 29,740.56
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.