Finding the Fourth Proportional to 86,146.13, 129,219.20 and 26,986.41
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Solution
The fourth proportional to 86,146.13, 129,219.20 and 26,986.41 is: 40,479.62
Step by Step Solution
- Step 1: Write the proportion equation
86,146.13 : 129,219.20 = 26,986.41 : x - Step 2: Convert to fraction form
86,146.13/129,219.20 = 26,986.41/x - Step 3: Cross multiply
86,146.13x = 129,219.20 × 26,986.41 - Step 4: Simplify right side
86,146.13x = 3,487,162,176.14 - Step 5: Solve for x
x = 3,487,162,176.14/86,146.13 - Step 6: Final answer
x = 40,479.62
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Similar ratio
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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.