Finding the Fourth Proportional to 81,029,470.38, 121,544,517.23 and 19,618,526.79
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Solution
The fourth proportional to 81,029,470.38, 121,544,517.23 and 19,618,526.79 is: 29,427,865.64
Step by Step Solution
- Step 1: Write the proportion equation
81,029,470.38 : 121,544,517.23 = 19,618,526.79 : x - Step 2: Convert to fraction form
81,029,470.38/121,544,517.23 = 19,618,526.79/x - Step 3: Cross multiply
81,029,470.38x = 121,544,517.23 × 19,618,526.79 - Step 4: Simplify right side
81,029,470.38x = 2,384,524,367,356,278.50 - Step 5: Solve for x
x = 2,384,524,367,356,278.50/81,029,470.38 - Step 6: Final answer
x = 29,427,865.64
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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.