Finding the Fourth Proportional to 80,574.51, 120,858.12 and 27,988.10
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Solution
The fourth proportional to 80,574.51, 120,858.12 and 27,988.10 is: 41,980.88
Step by Step Solution
- Step 1: Write the proportion equation
80,574.51 : 120,858.12 = 27,988.10 : x - Step 2: Convert to fraction form
80,574.51/120,858.12 = 27,988.10/x - Step 3: Cross multiply
80,574.51x = 120,858.12 × 27,988.10 - Step 4: Simplify right side
80,574.51x = 3,382,588,544.08 - Step 5: Solve for x
x = 3,382,588,544.08/80,574.51 - Step 6: Final answer
x = 41,980.88
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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.