Finding the Fourth Proportional to 76,878.42, 115,323.57 and 29,516.28
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Solution
The fourth proportional to 76,878.42, 115,323.57 and 29,516.28 is: 44,276.70
Step by Step Solution
- Step 1: Write the proportion equation
76,878.42 : 115,323.57 = 29,516.28 : x - Step 2: Convert to fraction form
76,878.42/115,323.57 = 29,516.28/x - Step 3: Cross multiply
76,878.42x = 115,323.57 × 29,516.28 - Step 4: Simplify right side
76,878.42x = 3,403,922,782.72 - Step 5: Solve for x
x = 3,403,922,782.72/76,878.42 - Step 6: Final answer
x = 44,276.70
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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.