Finding the Fourth Proportional to 80,259.36, 120,381.36 and 27,661.60
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Solution
The fourth proportional to 80,259.36, 120,381.36 and 27,661.60 is: 41,489.75
Step by Step Solution
- Step 1: Write the proportion equation
80,259.36 : 120,381.36 = 27,661.60 : x - Step 2: Convert to fraction form
80,259.36/120,381.36 = 27,661.60/x - Step 3: Cross multiply
80,259.36x = 120,381.36 × 27,661.60 - Step 4: Simplify right side
80,259.36x = 3,329,941,027.78 - Step 5: Solve for x
x = 3,329,941,027.78/80,259.36 - Step 6: Final answer
x = 41,489.75
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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.