Finding the Fourth Proportional to 83,780.63, 125,631.46 and 30,434.99
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Solution
The fourth proportional to 83,780.63, 125,631.46 and 30,434.99 is: 45,638.14
Step by Step Solution
- Step 1: Write the proportion equation
83,780.63 : 125,631.46 = 30,434.99 : x - Step 2: Convert to fraction form
83,780.63/125,631.46 = 30,434.99/x - Step 3: Cross multiply
83,780.63x = 125,631.46 × 30,434.99 - Step 4: Simplify right side
83,780.63x = 3,823,592,076.61 - Step 5: Solve for x
x = 3,823,592,076.61/83,780.63 - Step 6: Final answer
x = 45,638.14
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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.