Finding the Fourth Proportional to 79,879.62, 110,155.14 and 61,968.08
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Solution
The fourth proportional to 79,879.62, 110,155.14 and 61,968.08 is: 85,454.87
Step by Step Solution
- Step 1: Write the proportion equation
79,879.62 : 110,155.14 = 61,968.08 : x - Step 2: Convert to fraction form
79,879.62/110,155.14 = 61,968.08/x - Step 3: Cross multiply
79,879.62x = 110,155.14 × 61,968.08 - Step 4: Simplify right side
79,879.62x = 6,826,102,527.93 - Step 5: Solve for x
x = 6,826,102,527.93/79,879.62 - Step 6: Final answer
x = 85,454.87
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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.