Finding the Fourth Proportional to 87,868.21, 131,775.07 and 31,701.02
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Solution
The fourth proportional to 87,868.21, 131,775.07 and 31,701.02 is: 47,541.70
Step by Step Solution
- Step 1: Write the proportion equation
87,868.21 : 131,775.07 = 31,701.02 : x - Step 2: Convert to fraction form
87,868.21/131,775.07 = 31,701.02/x - Step 3: Cross multiply
87,868.21x = 131,775.07 × 31,701.02 - Step 4: Simplify right side
87,868.21x = 4,177,404,155.60 - Step 5: Solve for x
x = 4,177,404,155.60/87,868.21 - Step 6: Final answer
x = 47,541.70
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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.