Finding the Fourth Proportional to 81,873,845.70, 122,474,845.35 and 73,811,688.90
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Solution
The fourth proportional to 81,873,845.70, 122,474,845.35 and 73,811,688.90 is: 110,414,688.67
Step by Step Solution
- Step 1: Write the proportion equation
81,873,845.70 : 122,474,845.35 = 73,811,688.90 : x - Step 2: Convert to fraction form
81,873,845.70/122,474,845.35 = 73,811,688.90/x - Step 3: Cross multiply
81,873,845.70x = 122,474,845.35 × 73,811,688.90 - Step 4: Simplify right side
81,873,845.70x = 9,040,075,183,049,812 - Step 5: Solve for x
x = 9,040,075,183,049,812/81,873,845.70 - Step 6: Final answer
x = 110,414,688.67
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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.