Finding the Fourth Proportional to 112,739.06, 155,581.60 and 61,756.49
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Solution
The fourth proportional to 112,739.06, 155,581.60 and 61,756.49 is: 85,224.88
Step by Step Solution
- Step 1: Write the proportion equation
112,739.06 : 155,581.60 = 61,756.49 : x - Step 2: Convert to fraction form
112,739.06/155,581.60 = 61,756.49/x - Step 3: Cross multiply
112,739.06x = 155,581.60 × 61,756.49 - Step 4: Simplify right side
112,739.06x = 9,608,173,370.19 - Step 5: Solve for x
x = 9,608,173,370.19/112,739.06 - Step 6: Final answer
x = 85,224.88
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.