Finding the Fourth Proportional to 86,416.45, 129,583.36 and 44,316.70
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Solution
The fourth proportional to 86,416.45, 129,583.36 and 44,316.70 is: 66,453.86
Step by Step Solution
- Step 1: Write the proportion equation
86,416.45 : 129,583.36 = 44,316.70 : x - Step 2: Convert to fraction form
86,416.45/129,583.36 = 44,316.70/x - Step 3: Cross multiply
86,416.45x = 129,583.36 × 44,316.70 - Step 4: Simplify right side
86,416.45x = 5,742,706,890.11 - Step 5: Solve for x
x = 5,742,706,890.11/86,416.45 - Step 6: Final answer
x = 66,453.86
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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.