Finding the Fourth Proportional to 75,942.24, 113,913.40 and 19,782.20
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Solution
The fourth proportional to 75,942.24, 113,913.40 and 19,782.20 is: 29,673.31
Step by Step Solution
- Step 1: Write the proportion equation
75,942.24 : 113,913.40 = 19,782.20 : x - Step 2: Convert to fraction form
75,942.24/113,913.40 = 19,782.20/x - Step 3: Cross multiply
75,942.24x = 113,913.40 × 19,782.20 - Step 4: Simplify right side
75,942.24x = 2,253,457,661.48 - Step 5: Solve for x
x = 2,253,457,661.48/75,942.24 - Step 6: Final answer
x = 29,673.31
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1.5x scale
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.