Finding the Fourth Proportional to 86,331.86, 129,497.60 and 27,172.70
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Solution
The fourth proportional to 86,331.86, 129,497.60 and 27,172.70 is: 40,758.99
Step by Step Solution
- Step 1: Write the proportion equation
86,331.86 : 129,497.60 = 27,172.70 : x - Step 2: Convert to fraction form
86,331.86/129,497.60 = 27,172.70/x - Step 3: Cross multiply
86,331.86x = 129,497.60 × 27,172.70 - Step 4: Simplify right side
86,331.86x = 3,518,799,435.52 - Step 5: Solve for x
x = 3,518,799,435.52/86,331.86 - Step 6: Final answer
x = 40,758.99
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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.