Finding the Fourth Proportional to 84,919.05, 127,378.19 and 21,739.05
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Solution
The fourth proportional to 84,919.05, 127,378.19 and 21,739.05 is: 32,608.48
Step by Step Solution
- Step 1: Write the proportion equation
84,919.05 : 127,378.19 = 21,739.05 : x - Step 2: Convert to fraction form
84,919.05/127,378.19 = 21,739.05/x - Step 3: Cross multiply
84,919.05x = 127,378.19 × 21,739.05 - Step 4: Simplify right side
84,919.05x = 2,769,080,895.67 - Step 5: Solve for x
x = 2,769,080,895.67/84,919.05 - Step 6: Final answer
x = 32,608.48
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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.