Finding the Fourth Proportional to 110,415.20, 165,631.80 and 47,235.80
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Solution
The fourth proportional to 110,415.20, 165,631.80 and 47,235.80 is: 70,857.55
Step by Step Solution
- Step 1: Write the proportion equation
110,415.20 : 165,631.80 = 47,235.80 : x - Step 2: Convert to fraction form
110,415.20/165,631.80 = 47,235.80/x - Step 3: Cross multiply
110,415.20x = 165,631.80 × 47,235.80 - Step 4: Simplify right side
110,415.20x = 7,823,750,578.44 - Step 5: Solve for x
x = 7,823,750,578.44/110,415.20 - Step 6: Final answer
x = 70,857.55
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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.