Finding the Fourth Proportional to 87,923.37, 121,334.36 and 47,637.12
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Solution
The fourth proportional to 87,923.37, 121,334.36 and 47,637.12 is: 65,739.28
Step by Step Solution
- Step 1: Write the proportion equation
87,923.37 : 121,334.36 = 47,637.12 : x - Step 2: Convert to fraction form
87,923.37/121,334.36 = 47,637.12/x - Step 3: Cross multiply
87,923.37x = 121,334.36 × 47,637.12 - Step 4: Simplify right side
87,923.37x = 5,780,019,229.26 - Step 5: Solve for x
x = 5,780,019,229.26/87,923.37 - Step 6: Final answer
x = 65,739.28
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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.