Finding the Fourth Proportional to 5,436,831.21, 8,170,194.12 and 5,081,346.99
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Solution
The fourth proportional to 5,436,831.21, 8,170,194.12 and 5,081,346.99 is: 7,635,990.47
Step by Step Solution
- Step 1: Write the proportion equation
5,436,831.21 : 8,170,194.12 = 5,081,346.99 : x - Step 2: Convert to fraction form
5,436,831.21/8,170,194.12 = 5,081,346.99/x - Step 3: Cross multiply
5,436,831.21x = 8,170,194.12 × 5,081,346.99 - Step 4: Simplify right side
5,436,831.21x = 41,515,591,299,377.70 - Step 5: Solve for x
x = 41,515,591,299,377.70/5,436,831.21 - Step 6: Final answer
x = 7,635,990.47
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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.