Finding the Fourth Proportional to 38,639,251.80, 57,958,877.70 and 20,723,347.80
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Solution
The fourth proportional to 38,639,251.80, 57,958,877.70 and 20,723,347.80 is: 31,085,021.70
Step by Step Solution
- Step 1: Write the proportion equation
38,639,251.80 : 57,958,877.70 = 20,723,347.80 : x - Step 2: Convert to fraction form
38,639,251.80/57,958,877.70 = 20,723,347.80/x - Step 3: Cross multiply
38,639,251.80x = 57,958,877.70 × 20,723,347.80 - Step 4: Simplify right side
38,639,251.80x = 1,201,101,980,674,764.25 - Step 5: Solve for x
x = 1,201,101,980,674,764.25/38,639,251.80 - Step 6: Final answer
x = 31,085,021.70
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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.