Finding the Fourth Proportional to 99,840,761.80, 137,785,573.56 and 55,788,829.99
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Solution
The fourth proportional to 99,840,761.80, 137,785,573.56 and 55,788,829.99 is: 76,991,559.36
Step by Step Solution
- Step 1: Write the proportion equation
99,840,761.80 : 137,785,573.56 = 55,788,829.99 : x - Step 2: Convert to fraction form
99,840,761.80/137,785,573.56 = 55,788,829.99/x - Step 3: Cross multiply
99,840,761.80x = 137,785,573.56 × 55,788,829.99 - Step 4: Simplify right side
99,840,761.80x = 7,686,895,938,278,223 - Step 5: Solve for x
x = 7,686,895,938,278,223/99,840,761.80 - Step 6: Final answer
x = 76,991,559.36
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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.