Finding the Fourth Proportional to 87,884.28, 121,285.62 and 53,896.68
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Solution
The fourth proportional to 87,884.28, 121,285.62 and 53,896.68 is: 74,380.68
Step by Step Solution
- Step 1: Write the proportion equation
87,884.28 : 121,285.62 = 53,896.68 : x - Step 2: Convert to fraction form
87,884.28/121,285.62 = 53,896.68/x - Step 3: Cross multiply
87,884.28x = 121,285.62 × 53,896.68 - Step 4: Simplify right side
87,884.28x = 6,536,892,249.74 - Step 5: Solve for x
x = 6,536,892,249.74/87,884.28 - Step 6: Final answer
x = 74,380.68
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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.