Finding the Fourth Proportional to 81,627.08, 122,438.66 and 48,105.70
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Solution
The fourth proportional to 81,627.08, 122,438.66 and 48,105.70 is: 72,157.39
Step by Step Solution
- Step 1: Write the proportion equation
81,627.08 : 122,438.66 = 48,105.70 : x - Step 2: Convert to fraction form
81,627.08/122,438.66 = 48,105.70/x - Step 3: Cross multiply
81,627.08x = 122,438.66 × 48,105.70 - Step 4: Simplify right side
81,627.08x = 5,889,996,899.74 - Step 5: Solve for x
x = 5,889,996,899.74/81,627.08 - Step 6: Final answer
x = 72,157.39
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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.