Finding the Fourth Proportional to 87,611.05, 120,903.18 and 47,324.80
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Solution
The fourth proportional to 87,611.05, 120,903.18 and 47,324.80 is: 65,308.18
Step by Step Solution
- Step 1: Write the proportion equation
87,611.05 : 120,903.18 = 47,324.80 : x - Step 2: Convert to fraction form
87,611.05/120,903.18 = 47,324.80/x - Step 3: Cross multiply
87,611.05x = 120,903.18 × 47,324.80 - Step 4: Simplify right side
87,611.05x = 5,721,718,576.24 - Step 5: Solve for x
x = 5,721,718,576.24/87,611.05 - Step 6: Final answer
x = 65,308.18
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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.