Finding the Fourth Proportional to 97,786.38, 134,736.84 and 65,899.92
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Solution
The fourth proportional to 97,786.38, 134,736.84 and 65,899.92 is: 90,801.47
Step by Step Solution
- Step 1: Write the proportion equation
97,786.38 : 134,736.84 = 65,899.92 : x - Step 2: Convert to fraction form
97,786.38/134,736.84 = 65,899.92/x - Step 3: Cross multiply
97,786.38x = 134,736.84 × 65,899.92 - Step 4: Simplify right side
97,786.38x = 8,879,146,977.05 - Step 5: Solve for x
x = 8,879,146,977.05/97,786.38 - Step 6: Final answer
x = 90,801.47
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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.