Finding the Fourth Proportional to 71,485.81, 107,119.36 and 38,210.61
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Solution
The fourth proportional to 71,485.81, 107,119.36 and 38,210.61 is: 57,257.46
Step by Step Solution
- Step 1: Write the proportion equation
71,485.81 : 107,119.36 = 38,210.61 : x - Step 2: Convert to fraction form
71,485.81/107,119.36 = 38,210.61/x - Step 3: Cross multiply
71,485.81x = 107,119.36 × 38,210.61 - Step 4: Simplify right side
71,485.81x = 4,093,096,088.41 - Step 5: Solve for x
x = 4,093,096,088.41/71,485.81 - Step 6: Final answer
x = 57,257.46
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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.