Finding the Fourth Proportional to 85,536,245.20, 128,341,231.80 and 49,665,115.60
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Solution
The fourth proportional to 85,536,245.20, 128,341,231.80 and 49,665,115.60 is: 74,519,077.83
Step by Step Solution
- Step 1: Write the proportion equation
85,536,245.20 : 128,341,231.80 = 49,665,115.60 : x - Step 2: Convert to fraction form
85,536,245.20/128,341,231.80 = 49,665,115.60/x - Step 3: Cross multiply
85,536,245.20x = 128,341,231.80 × 49,665,115.60 - Step 4: Simplify right side
85,536,245.20x = 6,374,082,113,593,396 - Step 5: Solve for x
x = 6,374,082,113,593,396/85,536,245.20 - Step 6: Final answer
x = 74,519,077.83
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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.