Finding the Fourth Proportional to 87,573.62, 131,379.64 and 28,415.26
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Solution
The fourth proportional to 87,573.62, 131,379.64 and 28,415.26 is: 42,629.12
Step by Step Solution
- Step 1: Write the proportion equation
87,573.62 : 131,379.64 = 28,415.26 : x - Step 2: Convert to fraction form
87,573.62/131,379.64 = 28,415.26/x - Step 3: Cross multiply
87,573.62x = 131,379.64 × 28,415.26 - Step 4: Simplify right side
87,573.62x = 3,733,186,629.31 - Step 5: Solve for x
x = 3,733,186,629.31/87,573.62 - Step 6: Final answer
x = 42,629.12
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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.