Finding the Fourth Proportional to 81,850.99, 122,510.09 and 45,767.92
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Solution
The fourth proportional to 81,850.99, 122,510.09 and 45,767.92 is: 68,502.92
Step by Step Solution
- Step 1: Write the proportion equation
81,850.99 : 122,510.09 = 45,767.92 : x - Step 2: Convert to fraction form
81,850.99/122,510.09 = 45,767.92/x - Step 3: Cross multiply
81,850.99x = 122,510.09 × 45,767.92 - Step 4: Simplify right side
81,850.99x = 5,607,031,998.31 - Step 5: Solve for x
x = 5,607,031,998.31/81,850.99 - Step 6: Final answer
x = 68,502.92
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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.