Finding the Fourth Proportional to 76,684.08, 115,031.52 and 20,524.08
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Solution
The fourth proportional to 76,684.08, 115,031.52 and 20,524.08 is: 30,787.57
Step by Step Solution
- Step 1: Write the proportion equation
76,684.08 : 115,031.52 = 20,524.08 : x - Step 2: Convert to fraction form
76,684.08/115,031.52 = 20,524.08/x - Step 3: Cross multiply
76,684.08x = 115,031.52 × 20,524.08 - Step 4: Simplify right side
76,684.08x = 2,360,916,119.00 - Step 5: Solve for x
x = 2,360,916,119.00/76,684.08 - Step 6: Final answer
x = 30,787.57
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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.