Finding the Fourth Proportional to 80,804.36, 121,257.02 and 30,888.68
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Solution
The fourth proportional to 80,804.36, 121,257.02 and 30,888.68 is: 46,352.32
Step by Step Solution
- Step 1: Write the proportion equation
80,804.36 : 121,257.02 = 30,888.68 : x - Step 2: Convert to fraction form
80,804.36/121,257.02 = 30,888.68/x - Step 3: Cross multiply
80,804.36x = 121,257.02 × 30,888.68 - Step 4: Simplify right side
80,804.36x = 3,745,469,288.53 - Step 5: Solve for x
x = 3,745,469,288.53/80,804.36 - Step 6: Final answer
x = 46,352.32
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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.