Finding the Fourth Proportional to 76,788.77, 115,182.69 and 19,862.68
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Solution
The fourth proportional to 76,788.77, 115,182.69 and 19,862.68 is: 29,793.89
Step by Step Solution
- Step 1: Write the proportion equation
76,788.77 : 115,182.69 = 19,862.68 : x - Step 2: Convert to fraction form
76,788.77/115,182.69 = 19,862.68/x - Step 3: Cross multiply
76,788.77x = 115,182.69 × 19,862.68 - Step 4: Simplify right side
76,788.77x = 2,287,836,337.10 - Step 5: Solve for x
x = 2,287,836,337.10/76,788.77 - Step 6: Final answer
x = 29,793.89
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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.