Finding the Fourth Proportional to 86,630.40, 129,797.68 and 47,116.96
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Solution
The fourth proportional to 86,630.40, 129,797.68 and 47,116.96 is: 70,594.99
Step by Step Solution
- Step 1: Write the proportion equation
86,630.40 : 129,797.68 = 47,116.96 : x - Step 2: Convert to fraction form
86,630.40/129,797.68 = 47,116.96/x - Step 3: Cross multiply
86,630.40x = 129,797.68 × 47,116.96 - Step 4: Simplify right side
86,630.40x = 6,115,672,096.65 - Step 5: Solve for x
x = 6,115,672,096.65/86,630.40 - Step 6: Final answer
x = 70,594.99
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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.