Finding the Fourth Proportional to 79,716,163.20, 119,574,244.80 and 69,638,467.20
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Solution
The fourth proportional to 79,716,163.20, 119,574,244.80 and 69,638,467.20 is: 104,457,700.80
Step by Step Solution
- Step 1: Write the proportion equation
79,716,163.20 : 119,574,244.80 = 69,638,467.20 : x - Step 2: Convert to fraction form
79,716,163.20/119,574,244.80 = 69,638,467.20/x - Step 3: Cross multiply
79,716,163.20x = 119,574,244.80 × 69,638,467.20 - Step 4: Simplify right side
79,716,163.20x = 8,326,967,124,469,571 - Step 5: Solve for x
x = 8,326,967,124,469,571/79,716,163.20 - Step 6: Final answer
x = 104,457,700.80
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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.