Finding the Fourth Proportional to 76,938.13, 115,422.15 and 29,549.75
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Solution
The fourth proportional to 76,938.13, 115,422.15 and 29,549.75 is: 44,330.37
Step by Step Solution
- Step 1: Write the proportion equation
76,938.13 : 115,422.15 = 29,549.75 : x - Step 2: Convert to fraction form
76,938.13/115,422.15 = 29,549.75/x - Step 3: Cross multiply
76,938.13x = 115,422.15 × 29,549.75 - Step 4: Simplify right side
76,938.13x = 3,410,695,676.96 - Step 5: Solve for x
x = 3,410,695,676.96/76,938.13 - Step 6: Final answer
x = 44,330.37
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1.5x scale
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.