Finding the Fourth Proportional to 87,757.21, 121,066.48 and 51,440.25
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Solution
The fourth proportional to 87,757.21, 121,066.48 and 51,440.25 is: 70,964.99
Step by Step Solution
- Step 1: Write the proportion equation
87,757.21 : 121,066.48 = 51,440.25 : x - Step 2: Convert to fraction form
87,757.21/121,066.48 = 51,440.25/x - Step 3: Cross multiply
87,757.21x = 121,066.48 × 51,440.25 - Step 4: Simplify right side
87,757.21x = 6,227,689,695.15 - Step 5: Solve for x
x = 6,227,689,695.15/87,757.21 - Step 6: Final answer
x = 70,964.99
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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.