Finding the Fourth Proportional to 76,000.57, 113,939.36 and 31,660.63
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Solution
The fourth proportional to 76,000.57, 113,939.36 and 31,660.63 is: 47,465.33
Step by Step Solution
- Step 1: Write the proportion equation
76,000.57 : 113,939.36 = 31,660.63 : x - Step 2: Convert to fraction form
76,000.57/113,939.36 = 31,660.63/x - Step 3: Cross multiply
76,000.57x = 113,939.36 × 31,660.63 - Step 4: Simplify right side
76,000.57x = 3,607,391,919.40 - Step 5: Solve for x
x = 3,607,391,919.40/76,000.57 - Step 6: Final answer
x = 47,465.33
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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.