Finding the Fourth Proportional to 8,119,673.99, 11,205,149.78 and 4,448,729.64
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Solution
The fourth proportional to 8,119,673.99, 11,205,149.78 and 4,448,729.64 is: 6,139,246.72
Step by Step Solution
- Step 1: Write the proportion equation
8,119,673.99 : 11,205,149.78 = 4,448,729.64 : x - Step 2: Convert to fraction form
8,119,673.99/11,205,149.78 = 4,448,729.64/x - Step 3: Cross multiply
8,119,673.99x = 11,205,149.78 × 4,448,729.64 - Step 4: Simplify right side
8,119,673.99x = 49,848,681,937,037.65 - Step 5: Solve for x
x = 49,848,681,937,037.65/8,119,673.99 - Step 6: Final answer
x = 6,139,246.72
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.