Finding the Fourth Proportional to 87,968.58, 121,409.85 and 69,246.66
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Solution
The fourth proportional to 87,968.58, 121,409.85 and 69,246.66 is: 95,570.79
Step by Step Solution
- Step 1: Write the proportion equation
87,968.58 : 121,409.85 = 69,246.66 : x - Step 2: Convert to fraction form
87,968.58/121,409.85 = 69,246.66/x - Step 3: Cross multiply
87,968.58x = 121,409.85 × 69,246.66 - Step 4: Simplify right side
87,968.58x = 8,407,226,603.60 - Step 5: Solve for x
x = 8,407,226,603.60/87,968.58 - Step 6: Final answer
x = 95,570.79
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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.