Finding the Fourth Proportional to 115,425.64, 173,128.74 and 36,528.40
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Solution
The fourth proportional to 115,425.64, 173,128.74 and 36,528.40 is: 54,789.52
Step by Step Solution
- Step 1: Write the proportion equation
115,425.64 : 173,128.74 = 36,528.40 : x - Step 2: Convert to fraction form
115,425.64/173,128.74 = 36,528.40/x - Step 3: Cross multiply
115,425.64x = 173,128.74 × 36,528.40 - Step 4: Simplify right side
115,425.64x = 6,324,115,866.22 - Step 5: Solve for x
x = 6,324,115,866.22/115,425.64 - Step 6: Final answer
x = 54,789.52
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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.