Finding the Fourth Proportional to 81,203.99, 121,815.89 and 34,441.07
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Solution
The fourth proportional to 81,203.99, 121,815.89 and 34,441.07 is: 51,665.81
Step by Step Solution
- Step 1: Write the proportion equation
81,203.99 : 121,815.89 = 34,441.07 : x - Step 2: Convert to fraction form
81,203.99/121,815.89 = 34,441.07/x - Step 3: Cross multiply
81,203.99x = 121,815.89 × 34,441.07 - Step 4: Simplify right side
81,203.99x = 4,195,469,594.60 - Step 5: Solve for x
x = 4,195,469,594.60/81,203.99 - Step 6: Final answer
x = 51,665.81
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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.