Finding the Fourth Proportional to 85,986.97, 128,981.97 and 29,829.06
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Solution
The fourth proportional to 85,986.97, 128,981.97 and 29,829.06 is: 44,744.12
Step by Step Solution
- Step 1: Write the proportion equation
85,986.97 : 128,981.97 = 29,829.06 : x - Step 2: Convert to fraction form
85,986.97/128,981.97 = 29,829.06/x - Step 3: Cross multiply
85,986.97x = 128,981.97 × 29,829.06 - Step 4: Simplify right side
85,986.97x = 3,847,410,922.05 - Step 5: Solve for x
x = 3,847,410,922.05/85,986.97 - Step 6: Final answer
x = 44,744.12
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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.