Finding the Fourth Proportional to 75,866.92, 113,785.02 and 20,449.96
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Solution
The fourth proportional to 75,866.92, 113,785.02 and 20,449.96 is: 30,670.80
Step by Step Solution
- Step 1: Write the proportion equation
75,866.92 : 113,785.02 = 20,449.96 : x - Step 2: Convert to fraction form
75,866.92/113,785.02 = 20,449.96/x - Step 3: Cross multiply
75,866.92x = 113,785.02 × 20,449.96 - Step 4: Simplify right side
75,866.92x = 2,326,899,107.60 - Step 5: Solve for x
x = 2,326,899,107.60/75,866.92 - Step 6: Final answer
x = 30,670.80
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1.5x scale
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.