Finding the Fourth Proportional to 86,120.68, 118,840.62 and 48,400.60
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Solution
The fourth proportional to 86,120.68, 118,840.62 and 48,400.60 is: 66,789.50
Step by Step Solution
- Step 1: Write the proportion equation
86,120.68 : 118,840.62 = 48,400.60 : x - Step 2: Convert to fraction form
86,120.68/118,840.62 = 48,400.60/x - Step 3: Cross multiply
86,120.68x = 118,840.62 × 48,400.60 - Step 4: Simplify right side
86,120.68x = 5,751,957,312.37 - Step 5: Solve for x
x = 5,751,957,312.37/86,120.68 - Step 6: Final answer
x = 66,789.50
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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.