Finding the Fourth Proportional to 87,869.99, 131,777.73 and 31,702.80
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Solution
The fourth proportional to 87,869.99, 131,777.73 and 31,702.80 is: 47,544.37
Step by Step Solution
- Step 1: Write the proportion equation
87,869.99 : 131,777.73 = 31,702.80 : x - Step 2: Convert to fraction form
87,869.99/131,777.73 = 31,702.80/x - Step 3: Cross multiply
87,869.99x = 131,777.73 × 31,702.80 - Step 4: Simplify right side
87,869.99x = 4,177,723,018.64 - Step 5: Solve for x
x = 4,177,723,018.64/87,869.99 - Step 6: Final answer
x = 47,544.37
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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.