Finding the Fourth Proportional to 80,979.15, 121,468.74 and 41,511.09
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Solution
The fourth proportional to 80,979.15, 121,468.74 and 41,511.09 is: 62,266.64
Step by Step Solution
- Step 1: Write the proportion equation
80,979.15 : 121,468.74 = 41,511.09 : x - Step 2: Convert to fraction form
80,979.15/121,468.74 = 41,511.09/x - Step 3: Cross multiply
80,979.15x = 121,468.74 × 41,511.09 - Step 4: Simplify right side
80,979.15x = 5,042,299,798.33 - Step 5: Solve for x
x = 5,042,299,798.33/80,979.15 - Step 6: Final answer
x = 62,266.64
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1.5x scale
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.