Finding the Fourth Proportional to 87,075.36, 120,033.36 and 68,179.68
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Solution
The fourth proportional to 87,075.36, 120,033.36 and 68,179.68 is: 93,985.67
Step by Step Solution
- Step 1: Write the proportion equation
87,075.36 : 120,033.36 = 68,179.68 : x - Step 2: Convert to fraction form
87,075.36/120,033.36 = 68,179.68/x - Step 3: Cross multiply
87,075.36x = 120,033.36 × 68,179.68 - Step 4: Simplify right side
87,075.36x = 8,183,836,074.12 - Step 5: Solve for x
x = 8,183,836,074.12/87,075.36 - Step 6: Final answer
x = 93,985.67
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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.