Finding the Fourth Proportional to 73,905.13, 110,858.60 and 21,315.07
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Solution
The fourth proportional to 73,905.13, 110,858.60 and 21,315.07 is: 31,972.87
Step by Step Solution
- Step 1: Write the proportion equation
73,905.13 : 110,858.60 = 21,315.07 : x - Step 2: Convert to fraction form
73,905.13/110,858.60 = 21,315.07/x - Step 3: Cross multiply
73,905.13x = 110,858.60 × 21,315.07 - Step 4: Simplify right side
73,905.13x = 2,362,958,819.10 - Step 5: Solve for x
x = 2,362,958,819.10/73,905.13 - Step 6: Final answer
x = 31,972.87
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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.