Finding the Fourth Proportional to 71,973,431.07, 99,220,030.61 and 51,311,004.99
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Solution
The fourth proportional to 71,973,431.07, 99,220,030.61 and 51,311,004.99 is: 70,735,539.63
Step by Step Solution
- Step 1: Write the proportion equation
71,973,431.07 : 99,220,030.61 = 51,311,004.99 : x - Step 2: Convert to fraction form
71,973,431.07/99,220,030.61 = 51,311,004.99/x - Step 3: Cross multiply
71,973,431.07x = 99,220,030.61 × 51,311,004.99 - Step 4: Simplify right side
71,973,431.07x = 5,091,079,485,737,663 - Step 5: Solve for x
x = 5,091,079,485,737,663/71,973,431.07 - Step 6: Final answer
x = 70,735,539.63
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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.