Finding the Fourth Proportional to 99,858.47, 149,795.19 and 31,464.09
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Solution
The fourth proportional to 99,858.47, 149,795.19 and 31,464.09 is: 47,198.50
Step by Step Solution
- Step 1: Write the proportion equation
99,858.47 : 149,795.19 = 31,464.09 : x - Step 2: Convert to fraction form
99,858.47/149,795.19 = 31,464.09/x - Step 3: Cross multiply
99,858.47x = 149,795.19 × 31,464.09 - Step 4: Simplify right side
99,858.47x = 4,713,169,339.73 - Step 5: Solve for x
x = 4,713,169,339.73/99,858.47 - Step 6: Final answer
x = 47,198.50
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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.