Finding the Fourth Proportional to 76,987.64, 115,519.74 and 43,232.68
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Solution
The fourth proportional to 76,987.64, 115,519.74 and 43,232.68 is: 64,870.52
Step by Step Solution
- Step 1: Write the proportion equation
76,987.64 : 115,519.74 = 43,232.68 : x - Step 2: Convert to fraction form
76,987.64/115,519.74 = 43,232.68/x - Step 3: Cross multiply
76,987.64x = 115,519.74 × 43,232.68 - Step 4: Simplify right side
76,987.64x = 4,994,227,953.10 - Step 5: Solve for x
x = 4,994,227,953.10/76,987.64 - Step 6: Final answer
x = 64,870.52
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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.