Finding the Fourth Proportional to 76,779.11, 115,141.12 and 29,407.52
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Solution
The fourth proportional to 76,779.11, 115,141.12 and 29,407.52 is: 44,100.73
Step by Step Solution
- Step 1: Write the proportion equation
76,779.11 : 115,141.12 = 29,407.52 : x - Step 2: Convert to fraction form
76,779.11/115,141.12 = 29,407.52/x - Step 3: Cross multiply
76,779.11x = 115,141.12 × 29,407.52 - Step 4: Simplify right side
76,779.11x = 3,386,014,789.22 - Step 5: Solve for x
x = 3,386,014,789.22/76,779.11 - Step 6: Final answer
x = 44,100.73
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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.