Finding the Fourth Proportional to 86,380.76, 129,589.37 and 27,220.59
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Solution
The fourth proportional to 86,380.76, 129,589.37 and 27,220.59 is: 40,836.63
Step by Step Solution
- Step 1: Write the proportion equation
86,380.76 : 129,589.37 = 27,220.59 : x - Step 2: Convert to fraction form
86,380.76/129,589.37 = 27,220.59/x - Step 3: Cross multiply
86,380.76x = 129,589.37 × 27,220.59 - Step 4: Simplify right side
86,380.76x = 3,527,499,075.10 - Step 5: Solve for x
x = 3,527,499,075.10/86,380.76 - Step 6: Final answer
x = 40,836.63
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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.