Finding the Fourth Proportional to 75,420.76, 113,131.09 and 19,260.88
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Solution
The fourth proportional to 75,420.76, 113,131.09 and 19,260.88 is: 28,891.31
Step by Step Solution
- Step 1: Write the proportion equation
75,420.76 : 113,131.09 = 19,260.88 : x - Step 2: Convert to fraction form
75,420.76/113,131.09 = 19,260.88/x - Step 3: Cross multiply
75,420.76x = 113,131.09 × 19,260.88 - Step 4: Simplify right side
75,420.76x = 2,179,004,348.76 - Step 5: Solve for x
x = 2,179,004,348.76/75,420.76 - Step 6: Final answer
x = 28,891.31
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1.5x scale
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.