Finding the Fourth Proportional to 70,763.64, 106,161.86 and 31,321.09
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Solution
The fourth proportional to 70,763.64, 106,161.86 and 31,321.09 is: 46,988.89
Step by Step Solution
- Step 1: Write the proportion equation
70,763.64 : 106,161.86 = 31,321.09 : x - Step 2: Convert to fraction form
70,763.64/106,161.86 = 31,321.09/x - Step 3: Cross multiply
70,763.64x = 106,161.86 × 31,321.09 - Step 4: Simplify right side
70,763.64x = 3,325,105,171.63 - Step 5: Solve for x
x = 3,325,105,171.63/70,763.64 - Step 6: Final answer
x = 46,988.89
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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.