Finding the Fourth Proportional to 72,530.24, 108,795.36 and 19,945.28
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Solution
The fourth proportional to 72,530.24, 108,795.36 and 19,945.28 is: 29,917.92
Step by Step Solution
- Step 1: Write the proportion equation
72,530.24 : 108,795.36 = 19,945.28 : x - Step 2: Convert to fraction form
72,530.24/108,795.36 = 19,945.28/x - Step 3: Cross multiply
72,530.24x = 108,795.36 × 19,945.28 - Step 4: Simplify right side
72,530.24x = 2,169,953,917.90 - Step 5: Solve for x
x = 2,169,953,917.90/72,530.24 - Step 6: Final answer
x = 29,917.92
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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.