Finding the Fourth Proportional to 83,611.26, 115,379.51 and 47,805.21
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Solution
The fourth proportional to 83,611.26, 115,379.51 and 47,805.21 is: 65,968.88
Step by Step Solution
- Step 1: Write the proportion equation
83,611.26 : 115,379.51 = 47,805.21 : x - Step 2: Convert to fraction form
83,611.26/115,379.51 = 47,805.21/x - Step 3: Cross multiply
83,611.26x = 115,379.51 × 47,805.21 - Step 4: Simplify right side
83,611.26x = 5,515,741,466.22 - Step 5: Solve for x
x = 5,515,741,466.22/83,611.26 - Step 6: Final answer
x = 65,968.88
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1.5x scale
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.