Finding the Fourth Proportional to 81,166.25, 121,776.71 and 51,145.62
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Solution
The fourth proportional to 81,166.25, 121,776.71 and 51,145.62 is: 76,735.66
Step by Step Solution
- Step 1: Write the proportion equation
81,166.25 : 121,776.71 = 51,145.62 : x - Step 2: Convert to fraction form
81,166.25/121,776.71 = 51,145.62/x - Step 3: Cross multiply
81,166.25x = 121,776.71 × 51,145.62 - Step 4: Simplify right side
81,166.25x = 6,228,345,919.04 - Step 5: Solve for x
x = 6,228,345,919.04/81,166.25 - Step 6: Final answer
x = 76,735.66
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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.