Finding the Fourth Proportional to 71,235.20, 106,852.80 and 29,676.80
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Solution
The fourth proportional to 71,235.20, 106,852.80 and 29,676.80 is: 44,515.20
Step by Step Solution
- Step 1: Write the proportion equation
71,235.20 : 106,852.80 = 29,676.80 : x - Step 2: Convert to fraction form
71,235.20/106,852.80 = 29,676.80/x - Step 3: Cross multiply
71,235.20x = 106,852.80 × 29,676.80 - Step 4: Simplify right side
71,235.20x = 3,171,049,175.04 - Step 5: Solve for x
x = 3,171,049,175.04/71,235.20 - Step 6: Final answer
x = 44,515.20
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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.