Finding the Fourth Proportional to 86,163.80, 118,904.90 and 48,438.05
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Solution
The fourth proportional to 86,163.80, 118,904.90 and 48,438.05 is: 66,843.86
Step by Step Solution
- Step 1: Write the proportion equation
86,163.80 : 118,904.90 = 48,438.05 : x - Step 2: Convert to fraction form
86,163.80/118,904.90 = 48,438.05/x - Step 3: Cross multiply
86,163.80x = 118,904.90 × 48,438.05 - Step 4: Simplify right side
86,163.80x = 5,759,520,654.73 - Step 5: Solve for x
x = 5,759,520,654.73/86,163.80 - Step 6: Final answer
x = 66,843.86
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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.