Finding the Fourth Proportional to 89,072.21, 122,921.64 and 50,830.99
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Solution
The fourth proportional to 89,072.21, 122,921.64 and 50,830.99 is: 70,147.90
Step by Step Solution
- Step 1: Write the proportion equation
89,072.21 : 122,921.64 = 50,830.99 : x - Step 2: Convert to fraction form
89,072.21/122,921.64 = 50,830.99/x - Step 3: Cross multiply
89,072.21x = 122,921.64 × 50,830.99 - Step 4: Simplify right side
89,072.21x = 6,248,228,346.32 - Step 5: Solve for x
x = 6,248,228,346.32/89,072.21 - Step 6: Final answer
x = 70,147.90
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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.