Finding the Fourth Proportional to 76,416,010.40, 114,624,015.60 and 49,206,231.20
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Solution
The fourth proportional to 76,416,010.40, 114,624,015.60 and 49,206,231.20 is: 73,809,346.80
Step by Step Solution
- Step 1: Write the proportion equation
76,416,010.40 : 114,624,015.60 = 49,206,231.20 : x - Step 2: Convert to fraction form
76,416,010.40/114,624,015.60 = 49,206,231.20/x - Step 3: Cross multiply
76,416,010.40x = 114,624,015.60 × 49,206,231.20 - Step 4: Simplify right side
76,416,010.40x = 5,640,215,812,686,007 - Step 5: Solve for x
x = 5,640,215,812,686,007/76,416,010.40 - Step 6: Final answer
x = 73,809,346.80
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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.