Finding the Fourth Proportional to 90,798.20, 125,299.63 and 50,511.09
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Solution
The fourth proportional to 90,798.20, 125,299.63 and 50,511.09 is: 69,704.26
Step by Step Solution
- Step 1: Write the proportion equation
90,798.20 : 125,299.63 = 50,511.09 : x - Step 2: Convert to fraction form
90,798.20/125,299.63 = 50,511.09/x - Step 3: Cross multiply
90,798.20x = 125,299.63 × 50,511.09 - Step 4: Simplify right side
90,798.20x = 6,329,020,761.62 - Step 5: Solve for x
x = 6,329,020,761.62/90,798.20 - Step 6: Final answer
x = 69,704.26
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.