Finding the Fourth Proportional to 66,217,191.12, 91,378,998.55 and 36,447,202.69
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Solution
The fourth proportional to 66,217,191.12, 91,378,998.55 and 36,447,202.69 is: 50,296,740.55
Step by Step Solution
- Step 1: Write the proportion equation
66,217,191.12 : 91,378,998.55 = 36,447,202.69 : x - Step 2: Convert to fraction form
66,217,191.12/91,378,998.55 = 36,447,202.69/x - Step 3: Cross multiply
66,217,191.12x = 91,378,998.55 × 36,447,202.69 - Step 4: Simplify right side
66,217,191.12x = 3,330,508,881,681,510 - Step 5: Solve for x
x = 3,330,508,881,681,510/66,217,191.12 - Step 6: Final answer
x = 50,296,740.55
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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.