Finding the Fourth Proportional to 74,011,014.56, 102,136,403.97 and 40,519,930.79
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Solution
The fourth proportional to 74,011,014.56, 102,136,403.97 and 40,519,930.79 is: 55,918,163.59
Step by Step Solution
- Step 1: Write the proportion equation
74,011,014.56 : 102,136,403.97 = 40,519,930.79 : x - Step 2: Convert to fraction form
74,011,014.56/102,136,403.97 = 40,519,930.79/x - Step 3: Cross multiply
74,011,014.56x = 102,136,403.97 × 40,519,930.79 - Step 4: Simplify right side
74,011,014.56x = 4,138,560,019,493,199 - Step 5: Solve for x
x = 4,138,560,019,493,199/74,011,014.56 - Step 6: Final answer
x = 55,918,163.59
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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.