Finding the Fourth Proportional to 83,945.21, 125,917.81 and 57,569.99
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Solution
The fourth proportional to 83,945.21, 125,917.81 and 57,569.99 is: 86,354.98
Step by Step Solution
- Step 1: Write the proportion equation
83,945.21 : 125,917.81 = 57,569.99 : x - Step 2: Convert to fraction form
83,945.21/125,917.81 = 57,569.99/x - Step 3: Cross multiply
83,945.21x = 125,917.81 × 57,569.99 - Step 4: Simplify right side
83,945.21x = 7,249,086,289.01 - Step 5: Solve for x
x = 7,249,086,289.01/83,945.21 - Step 6: Final answer
x = 86,354.98
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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.