Finding the Fourth Proportional to 91,438.68, 125,904.99 and 80,044.41
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Solution
The fourth proportional to 91,438.68, 125,904.99 and 80,044.41 is: 110,215.84
Step by Step Solution
- Step 1: Write the proportion equation
91,438.68 : 125,904.99 = 80,044.41 : x - Step 2: Convert to fraction form
91,438.68/125,904.99 = 80,044.41/x - Step 3: Cross multiply
91,438.68x = 125,904.99 × 80,044.41 - Step 4: Simplify right side
91,438.68x = 10,077,990,640.61 - Step 5: Solve for x
x = 10,077,990,640.61/91,438.68 - Step 6: Final answer
x = 110,215.84
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.