Finding the Fourth Proportional to 71,485.10, 107,228.55 and 18,894.12
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Solution
The fourth proportional to 71,485.10, 107,228.55 and 18,894.12 is: 28,341.42
Step by Step Solution
- Step 1: Write the proportion equation
71,485.10 : 107,228.55 = 18,894.12 : x - Step 2: Convert to fraction form
71,485.10/107,228.55 = 18,894.12/x - Step 3: Cross multiply
71,485.10x = 107,228.55 × 18,894.12 - Step 4: Simplify right side
71,485.10x = 2,025,989,091.13 - Step 5: Solve for x
x = 2,025,989,091.13/71,485.10 - Step 6: Final answer
x = 28,341.42
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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.