Finding the Fourth Proportional to 87,990.83, 131,912.09 and 59,831.99
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Solution
The fourth proportional to 87,990.83, 131,912.09 and 59,831.99 is: 89,697.56
Step by Step Solution
- Step 1: Write the proportion equation
87,990.83 : 131,912.09 = 59,831.99 : x - Step 2: Convert to fraction form
87,990.83/131,912.09 = 59,831.99/x - Step 3: Cross multiply
87,990.83x = 131,912.09 × 59,831.99 - Step 4: Simplify right side
87,990.83x = 7,892,562,550.60 - Step 5: Solve for x
x = 7,892,562,550.60/87,990.83 - Step 6: Final answer
x = 89,697.56
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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.