Finding the Fourth Proportional to 77,691,338.36, 107,214,057.43 and 42,884,035.37
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Solution
The fourth proportional to 77,691,338.36, 107,214,057.43 and 42,884,035.37 is: 59,179,974.60
Step by Step Solution
- Step 1: Write the proportion equation
77,691,338.36 : 107,214,057.43 = 42,884,035.37 : x - Step 2: Convert to fraction form
77,691,338.36/107,214,057.43 = 42,884,035.37/x - Step 3: Cross multiply
77,691,338.36x = 107,214,057.43 × 42,884,035.37 - Step 4: Simplify right side
77,691,338.36x = 4,597,771,430,346,051 - Step 5: Solve for x
x = 4,597,771,430,346,051/77,691,338.36 - Step 6: Final answer
x = 59,179,974.60
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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.