Finding the Fourth Proportional to 83,991.30, 125,814.15 and 57,725.70
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Solution
The fourth proportional to 83,991.30, 125,814.15 and 57,725.70 is: 86,469.79
Step by Step Solution
- Step 1: Write the proportion equation
83,991.30 : 125,814.15 = 57,725.70 : x - Step 2: Convert to fraction form
83,991.30/125,814.15 = 57,725.70/x - Step 3: Cross multiply
83,991.30x = 125,814.15 × 57,725.70 - Step 4: Simplify right side
83,991.30x = 7,262,709,878.66 - Step 5: Solve for x
x = 7,262,709,878.66/83,991.30 - Step 6: Final answer
x = 86,469.79
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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.