Finding the Fourth Proportional to 80,853.49, 121,276.12 and 30,929.75
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Solution
The fourth proportional to 80,853.49, 121,276.12 and 30,929.75 is: 46,393.05
Step by Step Solution
- Step 1: Write the proportion equation
80,853.49 : 121,276.12 = 30,929.75 : x - Step 2: Convert to fraction form
80,853.49/121,276.12 = 30,929.75/x - Step 3: Cross multiply
80,853.49x = 121,276.12 × 30,929.75 - Step 4: Simplify right side
80,853.49x = 3,751,040,072.57 - Step 5: Solve for x
x = 3,751,040,072.57/80,853.49 - Step 6: Final answer
x = 46,393.05
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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.