Finding the Fourth Proportional to 71,911.26, 107,866.81 and 19,320.75
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Solution
The fourth proportional to 71,911.26, 107,866.81 and 19,320.75 is: 28,981.09
Step by Step Solution
- Step 1: Write the proportion equation
71,911.26 : 107,866.81 = 19,320.75 : x - Step 2: Convert to fraction form
71,911.26/107,866.81 = 19,320.75/x - Step 3: Cross multiply
71,911.26x = 107,866.81 × 19,320.75 - Step 4: Simplify right side
71,911.26x = 2,084,067,033.37 - Step 5: Solve for x
x = 2,084,067,033.37/71,911.26 - Step 6: Final answer
x = 28,981.09
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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.