Finding the Fourth Proportional to 72,524.40, 108,789.28 and 19,938
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Solution
The fourth proportional to 72,524.40, 108,789.28 and 19,938 is: 29,907.74
Step by Step Solution
- Step 1: Write the proportion equation
72,524.40 : 108,789.28 = 19,938 : x - Step 2: Convert to fraction form
72,524.40/108,789.28 = 19,938/x - Step 3: Cross multiply
72,524.40x = 108,789.28 × 19,938 - Step 4: Simplify right side
72,524.40x = 2,169,040,664.64 - Step 5: Solve for x
x = 2,169,040,664.64/72,524.40 - Step 6: Final answer
x = 29,907.74
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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.