Finding the Fourth Proportional to 90,725.64, 125,201.16 and 50,443.08
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Solution
The fourth proportional to 90,725.64, 125,201.16 and 50,443.08 is: 69,611.33
Step by Step Solution
- Step 1: Write the proportion equation
90,725.64 : 125,201.16 = 50,443.08 : x - Step 2: Convert to fraction form
90,725.64/125,201.16 = 50,443.08/x - Step 3: Cross multiply
90,725.64x = 125,201.16 × 50,443.08 - Step 4: Simplify right side
90,725.64x = 6,315,532,129.97 - Step 5: Solve for x
x = 6,315,532,129.97/90,725.64 - Step 6: Final answer
x = 69,611.33
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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.