Finding the Fourth Proportional to 20,331,993.20, 30,497,795.40 and 4,979,350.40
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Solution
The fourth proportional to 20,331,993.20, 30,497,795.40 and 4,979,350.40 is: 7,468,977.99
Step by Step Solution
- Step 1: Write the proportion equation
20,331,993.20 : 30,497,795.40 = 4,979,350.40 : x - Step 2: Convert to fraction form
20,331,993.20/30,497,795.40 = 4,979,350.40/x - Step 3: Cross multiply
20,331,993.20x = 30,497,795.40 × 4,979,350.40 - Step 4: Simplify right side
20,331,993.20x = 151,859,209,724,108.16 - Step 5: Solve for x
x = 151,859,209,724,108.16/20,331,993.20 - Step 6: Final answer
x = 7,468,977.99
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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.