Finding the Fourth Proportional to 86,568.40, 129,852.60 and 47,202.40
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Solution
The fourth proportional to 86,568.40, 129,852.60 and 47,202.40 is: 70,803.60
Step by Step Solution
- Step 1: Write the proportion equation
86,568.40 : 129,852.60 = 47,202.40 : x - Step 2: Convert to fraction form
86,568.40/129,852.60 = 47,202.40/x - Step 3: Cross multiply
86,568.40x = 129,852.60 × 47,202.40 - Step 4: Simplify right side
86,568.40x = 6,129,354,366.24 - Step 5: Solve for x
x = 6,129,354,366.24/86,568.40 - Step 6: Final answer
x = 70,803.60
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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.