Finding the Fourth Proportional to 75,943.24, 113,914.90 and 19,783.20
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Solution
The fourth proportional to 75,943.24, 113,914.90 and 19,783.20 is: 29,674.81
Step by Step Solution
- Step 1: Write the proportion equation
75,943.24 : 113,914.90 = 19,783.20 : x - Step 2: Convert to fraction form
75,943.24/113,914.90 = 19,783.20/x - Step 3: Cross multiply
75,943.24x = 113,914.90 × 19,783.20 - Step 4: Simplify right side
75,943.24x = 2,253,601,249.68 - Step 5: Solve for x
x = 2,253,601,249.68/75,943.24 - Step 6: Final answer
x = 29,674.81
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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.