Finding the Fourth Proportional to 83,997.36, 125,923.20 and 31,407.36
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Solution
The fourth proportional to 83,997.36, 125,923.20 and 31,407.36 is: 47,083.80
Step by Step Solution
- Step 1: Write the proportion equation
83,997.36 : 125,923.20 = 31,407.36 : x - Step 2: Convert to fraction form
83,997.36/125,923.20 = 31,407.36/x - Step 3: Cross multiply
83,997.36x = 125,923.20 × 31,407.36 - Step 4: Simplify right side
83,997.36x = 3,954,915,274.75 - Step 5: Solve for x
x = 3,954,915,274.75/83,997.36 - Step 6: Final answer
x = 47,083.80
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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.