Finding the Fourth Proportional to 86,736.20, 130,104.30 and 44,745.80
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Solution
The fourth proportional to 86,736.20, 130,104.30 and 44,745.80 is: 67,118.70
Step by Step Solution
- Step 1: Write the proportion equation
86,736.20 : 130,104.30 = 44,745.80 : x - Step 2: Convert to fraction form
86,736.20/130,104.30 = 44,745.80/x - Step 3: Cross multiply
86,736.20x = 130,104.30 × 44,745.80 - Step 4: Simplify right side
86,736.20x = 5,821,620,986.94 - Step 5: Solve for x
x = 5,821,620,986.94/86,736.20 - Step 6: Final answer
x = 67,118.70
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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.