Finding the Fourth Proportional to 81,542.11, 122,153.99 and 56,181.79
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Solution
The fourth proportional to 81,542.11, 122,153.99 and 56,181.79 is: 84,163.01
Step by Step Solution
- Step 1: Write the proportion equation
81,542.11 : 122,153.99 = 56,181.79 : x - Step 2: Convert to fraction form
81,542.11/122,153.99 = 56,181.79/x - Step 3: Cross multiply
81,542.11x = 122,153.99 × 56,181.79 - Step 4: Simplify right side
81,542.11x = 6,862,829,813.84 - Step 5: Solve for x
x = 6,862,829,813.84/81,542.11 - Step 6: Final answer
x = 84,163.01
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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.