Finding the Fourth Proportional to 76,829.71, 115,217.91 and 26,908.70
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Solution
The fourth proportional to 76,829.71, 115,217.91 and 26,908.70 is: 40,353.71
Step by Step Solution
- Step 1: Write the proportion equation
76,829.71 : 115,217.91 = 26,908.70 : x - Step 2: Convert to fraction form
76,829.71/115,217.91 = 26,908.70/x - Step 3: Cross multiply
76,829.71x = 115,217.91 × 26,908.70 - Step 4: Simplify right side
76,829.71x = 3,100,364,174.82 - Step 5: Solve for x
x = 3,100,364,174.82/76,829.71 - Step 6: Final answer
x = 40,353.71
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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.