Finding the Fourth Proportional to 38,581,814.11, 53,242,961.78 and 20,940,722.99
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Solution
The fourth proportional to 38,581,814.11, 53,242,961.78 and 20,940,722.99 is: 28,898,229.38
Step by Step Solution
- Step 1: Write the proportion equation
38,581,814.11 : 53,242,961.78 = 20,940,722.99 : x - Step 2: Convert to fraction form
38,581,814.11/53,242,961.78 = 20,940,722.99/x - Step 3: Cross multiply
38,581,814.11x = 53,242,961.78 × 20,940,722.99 - Step 4: Simplify right side
38,581,814.11x = 1,114,946,114,087,427.12 - Step 5: Solve for x
x = 1,114,946,114,087,427.12/38,581,814.11 - Step 6: Final answer
x = 28,898,229.38
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.