Finding the Fourth Proportional to 103,038.70, 154,471.65 and 53,790.70
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Solution
The fourth proportional to 103,038.70, 154,471.65 and 53,790.70 is: 80,640.95
Step by Step Solution
- Step 1: Write the proportion equation
103,038.70 : 154,471.65 = 53,790.70 : x - Step 2: Convert to fraction form
103,038.70/154,471.65 = 53,790.70/x - Step 3: Cross multiply
103,038.70x = 154,471.65 × 53,790.70 - Step 4: Simplify right side
103,038.70x = 8,309,138,183.66 - Step 5: Solve for x
x = 8,309,138,183.66/103,038.70 - Step 6: Final answer
x = 80,640.95
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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.