Finding the Fourth Proportional to 87,405.12, 120,617.94 and 49,676.88
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Solution
The fourth proportional to 87,405.12, 120,617.94 and 49,676.88 is: 68,553.45
Step by Step Solution
- Step 1: Write the proportion equation
87,405.12 : 120,617.94 = 49,676.88 : x - Step 2: Convert to fraction form
87,405.12/120,617.94 = 49,676.88/x - Step 3: Cross multiply
87,405.12x = 120,617.94 × 49,676.88 - Step 4: Simplify right side
87,405.12x = 5,991,922,931.23 - Step 5: Solve for x
x = 5,991,922,931.23/87,405.12 - Step 6: Final answer
x = 68,553.45
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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.