Finding the Fourth Proportional to 80,821,466.40, 121,232,199.60 and 48,509,853.60
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Solution
The fourth proportional to 80,821,466.40, 121,232,199.60 and 48,509,853.60 is: 72,764,780.40
Step by Step Solution
- Step 1: Write the proportion equation
80,821,466.40 : 121,232,199.60 = 48,509,853.60 : x - Step 2: Convert to fraction form
80,821,466.40/121,232,199.60 = 48,509,853.60/x - Step 3: Cross multiply
80,821,466.40x = 121,232,199.60 × 48,509,853.60 - Step 4: Simplify right side
80,821,466.40x = 5,880,956,254,201,978 - Step 5: Solve for x
x = 5,880,956,254,201,978/80,821,466.40 - Step 6: Final answer
x = 72,764,780.40
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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.