Finding the Fourth Proportional to 72,357.36, 108,534.60 and 19,771.44
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Solution
The fourth proportional to 72,357.36, 108,534.60 and 19,771.44 is: 29,656.77
Step by Step Solution
- Step 1: Write the proportion equation
72,357.36 : 108,534.60 = 19,771.44 : x - Step 2: Convert to fraction form
72,357.36/108,534.60 = 19,771.44/x - Step 3: Cross multiply
72,357.36x = 108,534.60 × 19,771.44 - Step 4: Simplify right side
72,357.36x = 2,145,885,331.82 - Step 5: Solve for x
x = 2,145,885,331.82/72,357.36 - Step 6: Final answer
x = 29,656.77
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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.