Finding the Fourth Proportional to 76,919.40, 115,430.36 and 29,573.57
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Solution
The fourth proportional to 76,919.40, 115,430.36 and 29,573.57 is: 44,380.07
Step by Step Solution
- Step 1: Write the proportion equation
76,919.40 : 115,430.36 = 29,573.57 : x - Step 2: Convert to fraction form
76,919.40/115,430.36 = 29,573.57/x - Step 3: Cross multiply
76,919.40x = 115,430.36 × 29,573.57 - Step 4: Simplify right side
76,919.40x = 3,413,687,972.29 - Step 5: Solve for x
x = 3,413,687,972.29/76,919.40 - Step 6: Final answer
x = 44,380.07
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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.