Finding the Fourth Proportional to 87,873.92, 121,267.68 and 48,129.92
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Solution
The fourth proportional to 87,873.92, 121,267.68 and 48,129.92 is: 66,420.20
Step by Step Solution
- Step 1: Write the proportion equation
87,873.92 : 121,267.68 = 48,129.92 : x - Step 2: Convert to fraction form
87,873.92/121,267.68 = 48,129.92/x - Step 3: Cross multiply
87,873.92x = 121,267.68 × 48,129.92 - Step 4: Simplify right side
87,873.92x = 5,836,603,736.99 - Step 5: Solve for x
x = 5,836,603,736.99/87,873.92 - Step 6: Final answer
x = 66,420.20
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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.