Finding the Fourth Proportional to 83,611.62, 115,351.19 and 47,782.41
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Solution
The fourth proportional to 83,611.62, 115,351.19 and 47,782.41 is: 65,920.95
Step by Step Solution
- Step 1: Write the proportion equation
83,611.62 : 115,351.19 = 47,782.41 : x - Step 2: Convert to fraction form
83,611.62/115,351.19 = 47,782.41/x - Step 3: Cross multiply
83,611.62x = 115,351.19 × 47,782.41 - Step 4: Simplify right side
83,611.62x = 5,511,757,615.66 - Step 5: Solve for x
x = 5,511,757,615.66/83,611.62 - Step 6: Final answer
x = 65,920.95
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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.