Finding the Fourth Proportional to 87,645.63, 120,948.40 and 49,407.42
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Solution
The fourth proportional to 87,645.63, 120,948.40 and 49,407.42 is: 68,180.79
Step by Step Solution
- Step 1: Write the proportion equation
87,645.63 : 120,948.40 = 49,407.42 : x - Step 2: Convert to fraction form
87,645.63/120,948.40 = 49,407.42/x - Step 3: Cross multiply
87,645.63x = 120,948.40 × 49,407.42 - Step 4: Simplify right side
87,645.63x = 5,975,748,397.13 - Step 5: Solve for x
x = 5,975,748,397.13/87,645.63 - Step 6: Final answer
x = 68,180.79
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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.