Finding the Fourth Proportional to 87,911.36, 121,326.36 and 50,191.28
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Solution
The fourth proportional to 87,911.36, 121,326.36 and 50,191.28 is: 69,268.92
Step by Step Solution
- Step 1: Write the proportion equation
87,911.36 : 121,326.36 = 50,191.28 : x - Step 2: Convert to fraction form
87,911.36/121,326.36 = 50,191.28/x - Step 3: Cross multiply
87,911.36x = 121,326.36 × 50,191.28 - Step 4: Simplify right side
87,911.36x = 6,089,525,306.14 - Step 5: Solve for x
x = 6,089,525,306.14/87,911.36 - Step 6: Final answer
x = 69,268.92
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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.