Finding the Fourth Proportional to 86,284.44, 129,389.60 and 30,107.70
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Solution
The fourth proportional to 86,284.44, 129,389.60 and 30,107.70 is: 45,148.62
Step by Step Solution
- Step 1: Write the proportion equation
86,284.44 : 129,389.60 = 30,107.70 : x - Step 2: Convert to fraction form
86,284.44/129,389.60 = 30,107.70/x - Step 3: Cross multiply
86,284.44x = 129,389.60 × 30,107.70 - Step 4: Simplify right side
86,284.44x = 3,895,623,335.19 - Step 5: Solve for x
x = 3,895,623,335.19/86,284.44 - Step 6: Final answer
x = 45,148.62
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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.