Finding the Fourth Proportional to 84,939.32, 127,409.75 and 25,774.99
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Solution
The fourth proportional to 84,939.32, 127,409.75 and 25,774.99 is: 38,662.72
Step by Step Solution
- Step 1: Write the proportion equation
84,939.32 : 127,409.75 = 25,774.99 : x - Step 2: Convert to fraction form
84,939.32/127,409.75 = 25,774.99/x - Step 3: Cross multiply
84,939.32x = 127,409.75 × 25,774.99 - Step 4: Simplify right side
84,939.32x = 3,283,984,584.75 - Step 5: Solve for x
x = 3,283,984,584.75/84,939.32 - Step 6: Final answer
x = 38,662.72
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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.