Finding the Fourth Proportional to 86,920.20, 130,331.70 and 36,991.80
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Solution
The fourth proportional to 86,920.20, 130,331.70 and 36,991.80 is: 55,467.02
Step by Step Solution
- Step 1: Write the proportion equation
86,920.20 : 130,331.70 = 36,991.80 : x - Step 2: Convert to fraction form
86,920.20/130,331.70 = 36,991.80/x - Step 3: Cross multiply
86,920.20x = 130,331.70 × 36,991.80 - Step 4: Simplify right side
86,920.20x = 4,821,204,180.06 - Step 5: Solve for x
x = 4,821,204,180.06/86,920.20 - Step 6: Final answer
x = 55,467.02
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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.