Finding the Fourth Proportional to 73,786.13, 110,679.29 and 31,638.99
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Solution
The fourth proportional to 73,786.13, 110,679.29 and 31,638.99 is: 47,458.53
Step by Step Solution
- Step 1: Write the proportion equation
73,786.13 : 110,679.29 = 31,638.99 : x - Step 2: Convert to fraction form
73,786.13/110,679.29 = 31,638.99/x - Step 3: Cross multiply
73,786.13x = 110,679.29 × 31,638.99 - Step 4: Simplify right side
73,786.13x = 3,501,780,949.52 - Step 5: Solve for x
x = 3,501,780,949.52/73,786.13 - Step 6: Final answer
x = 47,458.53
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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.