Finding the Fourth Proportional to 89,218.73, 133,785.74 and 51,790.39
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Solution
The fourth proportional to 89,218.73, 133,785.74 and 51,790.39 is: 77,660.99
Step by Step Solution
- Step 1: Write the proportion equation
89,218.73 : 133,785.74 = 51,790.39 : x - Step 2: Convert to fraction form
89,218.73/133,785.74 = 51,790.39/x - Step 3: Cross multiply
89,218.73x = 133,785.74 × 51,790.39 - Step 4: Simplify right side
89,218.73x = 6,928,815,446.05 - Step 5: Solve for x
x = 6,928,815,446.05/89,218.73 - Step 6: Final answer
x = 77,660.99
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.