Finding the Fourth Proportional to 76,873.46, 106,078.05 and 42,879.29
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Solution
The fourth proportional to 76,873.46, 106,078.05 and 42,879.29 is: 59,169.33
Step by Step Solution
- Step 1: Write the proportion equation
76,873.46 : 106,078.05 = 42,879.29 : x - Step 2: Convert to fraction form
76,873.46/106,078.05 = 42,879.29/x - Step 3: Cross multiply
76,873.46x = 106,078.05 × 42,879.29 - Step 4: Simplify right side
76,873.46x = 4,548,550,938.19 - Step 5: Solve for x
x = 4,548,550,938.19/76,873.46 - Step 6: Final answer
x = 59,169.33
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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.