Finding the Fourth Proportional to 76,987.16, 106,252.97 and 42,997.84
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Solution
The fourth proportional to 76,987.16, 106,252.97 and 42,997.84 is: 59,342.98
Step by Step Solution
- Step 1: Write the proportion equation
76,987.16 : 106,252.97 = 42,997.84 : x - Step 2: Convert to fraction form
76,987.16/106,252.97 = 42,997.84/x - Step 3: Cross multiply
76,987.16x = 106,252.97 × 42,997.84 - Step 4: Simplify right side
76,987.16x = 4,568,647,722.96 - Step 5: Solve for x
x = 4,568,647,722.96/76,987.16 - Step 6: Final answer
x = 59,342.98
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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.