Finding the Fourth Proportional to 71,789,901.95, 107,678,209.92 and 19,975,290.19
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Solution
The fourth proportional to 71,789,901.95, 107,678,209.92 and 19,975,290.19 is: 29,961,086.89
Step by Step Solution
- Step 1: Write the proportion equation
71,789,901.95 : 107,678,209.92 = 19,975,290.19 : x - Step 2: Convert to fraction form
71,789,901.95/107,678,209.92 = 19,975,290.19/x - Step 3: Cross multiply
71,789,901.95x = 107,678,209.92 × 19,975,290.19 - Step 4: Simplify right side
71,789,901.95x = 2,150,903,489,947,634 - Step 5: Solve for x
x = 2,150,903,489,947,634/71,789,901.95 - Step 6: Final answer
x = 29,961,086.89
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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.