Finding the Fourth Proportional to 81,657,442.60, 122,486,163.90 and 67,485,682.60
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Solution
The fourth proportional to 81,657,442.60, 122,486,163.90 and 67,485,682.60 is: 101,228,523.90
Step by Step Solution
- Step 1: Write the proportion equation
81,657,442.60 : 122,486,163.90 = 67,485,682.60 : x - Step 2: Convert to fraction form
81,657,442.60/122,486,163.90 = 67,485,682.60/x - Step 3: Cross multiply
81,657,442.60x = 122,486,163.90 × 67,485,682.60 - Step 4: Simplify right side
81,657,442.60x = 8,266,062,379,846,978 - Step 5: Solve for x
x = 8,266,062,379,846,978/81,657,442.60 - Step 6: Final answer
x = 101,228,523.90
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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.