Finding the Fourth Proportional to 128,725.48, 193,040.86 and 44,464.20
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Solution
The fourth proportional to 128,725.48, 193,040.86 and 44,464.20 is: 66,679.94
Step by Step Solution
- Step 1: Write the proportion equation
128,725.48 : 193,040.86 = 44,464.20 : x - Step 2: Convert to fraction form
128,725.48/193,040.86 = 44,464.20/x - Step 3: Cross multiply
128,725.48x = 193,040.86 × 44,464.20 - Step 4: Simplify right side
128,725.48x = 8,583,407,407.21 - Step 5: Solve for x
x = 8,583,407,407.21/128,725.48 - Step 6: Final answer
x = 66,679.94
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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.