Finding the Fourth Proportional to 76,309.63, 114,462.70 and 20,153.70
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Solution
The fourth proportional to 76,309.63, 114,462.70 and 20,153.70 is: 30,230.09
Step by Step Solution
- Step 1: Write the proportion equation
76,309.63 : 114,462.70 = 20,153.70 : x - Step 2: Convert to fraction form
76,309.63/114,462.70 = 20,153.70/x - Step 3: Cross multiply
76,309.63x = 114,462.70 × 20,153.70 - Step 4: Simplify right side
76,309.63x = 2,306,846,916.99 - Step 5: Solve for x
x = 2,306,846,916.99/76,309.63 - Step 6: Final answer
x = 30,230.09
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1.5x scale
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.