Finding the Fourth Proportional to 72,804.20, 109,206.34 and 20,213.68
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Solution
The fourth proportional to 72,804.20, 109,206.34 and 20,213.68 is: 30,320.53
Step by Step Solution
- Step 1: Write the proportion equation
72,804.20 : 109,206.34 = 20,213.68 : x - Step 2: Convert to fraction form
72,804.20/109,206.34 = 20,213.68/x - Step 3: Cross multiply
72,804.20x = 109,206.34 × 20,213.68 - Step 4: Simplify right side
72,804.20x = 2,207,462,010.73 - Step 5: Solve for x
x = 2,207,462,010.73/72,804.20 - Step 6: Final answer
x = 30,320.53
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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.