Finding the Fourth Proportional to 76,605.70, 114,908.55 and 21,201.70
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Solution
The fourth proportional to 76,605.70, 114,908.55 and 21,201.70 is: 31,802.55
Step by Step Solution
- Step 1: Write the proportion equation
76,605.70 : 114,908.55 = 21,201.70 : x - Step 2: Convert to fraction form
76,605.70/114,908.55 = 21,201.70/x - Step 3: Cross multiply
76,605.70x = 114,908.55 × 21,201.70 - Step 4: Simplify right side
76,605.70x = 2,436,256,604.54 - Step 5: Solve for x
x = 2,436,256,604.54/76,605.70 - Step 6: Final answer
x = 31,802.55
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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.