Finding the Fourth Proportional to 87,063.12, 130,410.36 and 72,236.88
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Solution
The fourth proportional to 87,063.12, 130,410.36 and 72,236.88 is: 108,202.39
Step by Step Solution
- Step 1: Write the proportion equation
87,063.12 : 130,410.36 = 72,236.88 : x - Step 2: Convert to fraction form
87,063.12/130,410.36 = 72,236.88/x - Step 3: Cross multiply
87,063.12x = 130,410.36 × 72,236.88 - Step 4: Simplify right side
87,063.12x = 9,420,437,526.08 - Step 5: Solve for x
x = 9,420,437,526.08/87,063.12 - Step 6: Final answer
x = 108,202.39
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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.