Finding the Fourth Proportional to 76,239.09, 114,358.91 and 53,985.15
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Solution
The fourth proportional to 76,239.09, 114,358.91 and 53,985.15 is: 80,977.92
Step by Step Solution
- Step 1: Write the proportion equation
76,239.09 : 114,358.91 = 53,985.15 : x - Step 2: Convert to fraction form
76,239.09/114,358.91 = 53,985.15/x - Step 3: Cross multiply
76,239.09x = 114,358.91 × 53,985.15 - Step 4: Simplify right side
76,239.09x = 6,173,682,640.26 - Step 5: Solve for x
x = 6,173,682,640.26/76,239.09 - Step 6: Final answer
x = 80,977.92
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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.