Finding the Fourth Proportional to 85,679.83, 118,239.74 and 47,953.99
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Solution
The fourth proportional to 85,679.83, 118,239.74 and 47,953.99 is: 66,177.39
Step by Step Solution
- Step 1: Write the proportion equation
85,679.83 : 118,239.74 = 47,953.99 : x - Step 2: Convert to fraction form
85,679.83/118,239.74 = 47,953.99/x - Step 3: Cross multiply
85,679.83x = 118,239.74 × 47,953.99 - Step 4: Simplify right side
85,679.83x = 5,670,067,309.56 - Step 5: Solve for x
x = 5,670,067,309.56/85,679.83 - Step 6: Final answer
x = 66,177.39
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.