Finding the Fourth Proportional to 76,679.38, 105,822.68 and 46,467.68
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Solution
The fourth proportional to 76,679.38, 105,822.68 and 46,467.68 is: 64,128.50
Step by Step Solution
- Step 1: Write the proportion equation
76,679.38 : 105,822.68 = 46,467.68 : x - Step 2: Convert to fraction form
76,679.38/105,822.68 = 46,467.68/x - Step 3: Cross multiply
76,679.38x = 105,822.68 × 46,467.68 - Step 4: Simplify right side
76,679.38x = 4,917,333,800.22 - Step 5: Solve for x
x = 4,917,333,800.22/76,679.38 - Step 6: Final answer
x = 64,128.50
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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.