Finding the Fourth Proportional to 87,928.39, 121,338.35 and 50,202.64
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Solution
The fourth proportional to 87,928.39, 121,338.35 and 50,202.64 is: 69,278.02
Step by Step Solution
- Step 1: Write the proportion equation
87,928.39 : 121,338.35 = 50,202.64 : x - Step 2: Convert to fraction form
87,928.39/121,338.35 = 50,202.64/x - Step 3: Cross multiply
87,928.39x = 121,338.35 × 50,202.64 - Step 4: Simplify right side
87,928.39x = 6,091,504,645.54 - Step 5: Solve for x
x = 6,091,504,645.54/87,928.39 - Step 6: Final answer
x = 69,278.02
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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.