Finding the Fourth Proportional to 76,990.80, 115,486.20 and 50,725.20
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Solution
The fourth proportional to 76,990.80, 115,486.20 and 50,725.20 is: 76,087.80
Step by Step Solution
- Step 1: Write the proportion equation
76,990.80 : 115,486.20 = 50,725.20 : x - Step 2: Convert to fraction form
76,990.80/115,486.20 = 50,725.20/x - Step 3: Cross multiply
76,990.80x = 115,486.20 × 50,725.20 - Step 4: Simplify right side
76,990.80x = 5,858,060,592.24 - Step 5: Solve for x
x = 5,858,060,592.24/76,990.80 - Step 6: Final answer
x = 76,087.80
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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.