Finding the Fourth Proportional to 76,903.20, 115,257.60 and 56,102.40
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Solution
The fourth proportional to 76,903.20, 115,257.60 and 56,102.40 is: 84,082.69
Step by Step Solution
- Step 1: Write the proportion equation
76,903.20 : 115,257.60 = 56,102.40 : x - Step 2: Convert to fraction form
76,903.20/115,257.60 = 56,102.40/x - Step 3: Cross multiply
76,903.20x = 115,257.60 × 56,102.40 - Step 4: Simplify right side
76,903.20x = 6,466,227,978.24 - Step 5: Solve for x
x = 6,466,227,978.24/76,903.20 - Step 6: Final answer
x = 84,082.69
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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.