Finding the Fourth Proportional to 39,123,471.21, 58,691,974.23 and 13,215,961.20
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Solution
The fourth proportional to 39,123,471.21, 58,691,974.23 and 13,215,961.20 is: 19,826,227.84
Step by Step Solution
- Step 1: Write the proportion equation
39,123,471.21 : 58,691,974.23 = 13,215,961.20 : x - Step 2: Convert to fraction form
39,123,471.21/58,691,974.23 = 13,215,961.20/x - Step 3: Cross multiply
39,123,471.21x = 58,691,974.23 × 13,215,961.20 - Step 4: Simplify right side
39,123,471.21x = 775,670,854,175,079.75 - Step 5: Solve for x
x = 775,670,854,175,079.75/39,123,471.21 - Step 6: Final answer
x = 19,826,227.84
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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.