Finding the Fourth Proportional to 74,759.76, 111,910.68 and 48,412.08
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Solution
The fourth proportional to 74,759.76, 111,910.68 and 48,412.08 is: 72,469.85
Step by Step Solution
- Step 1: Write the proportion equation
74,759.76 : 111,910.68 = 48,412.08 : x - Step 2: Convert to fraction form
74,759.76/111,910.68 = 48,412.08/x - Step 3: Cross multiply
74,759.76x = 111,910.68 × 48,412.08 - Step 4: Simplify right side
74,759.76x = 5,417,828,793.01 - Step 5: Solve for x
x = 5,417,828,793.01/74,759.76 - Step 6: Final answer
x = 72,469.85
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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.