Finding the Fourth Proportional to 76,877.28, 115,311.35 and 29,515.07
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Solution
The fourth proportional to 76,877.28, 115,311.35 and 29,515.07 is: 44,270.86
Step by Step Solution
- Step 1: Write the proportion equation
76,877.28 : 115,311.35 = 29,515.07 : x - Step 2: Convert to fraction form
76,877.28/115,311.35 = 29,515.07/x - Step 3: Cross multiply
76,877.28x = 115,311.35 × 29,515.07 - Step 4: Simplify right side
76,877.28x = 3,403,422,929.11 - Step 5: Solve for x
x = 3,403,422,929.11/76,877.28 - Step 6: Final answer
x = 44,270.86
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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.