Finding the Fourth Proportional to 87,207.84, 120,369.82 and 51,421.68
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Solution
The fourth proportional to 87,207.84, 120,369.82 and 51,421.68 is: 70,975.48
Step by Step Solution
- Step 1: Write the proportion equation
87,207.84 : 120,369.82 = 51,421.68 : x - Step 2: Convert to fraction form
87,207.84/120,369.82 = 51,421.68/x - Step 3: Cross multiply
87,207.84x = 120,369.82 × 51,421.68 - Step 4: Simplify right side
87,207.84x = 6,189,618,365.70 - Step 5: Solve for x
x = 6,189,618,365.70/87,207.84 - Step 6: Final answer
x = 70,975.48
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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.