Finding the Fourth Proportional to 77,139,529.05, 115,708,975.56 and 27,943,863.09
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Solution
The fourth proportional to 77,139,529.05, 115,708,975.56 and 27,943,863.09 is: 41,915,679.43
Step by Step Solution
- Step 1: Write the proportion equation
77,139,529.05 : 115,708,975.56 = 27,943,863.09 : x - Step 2: Convert to fraction form
77,139,529.05/115,708,975.56 = 27,943,863.09/x - Step 3: Cross multiply
77,139,529.05x = 115,708,975.56 × 27,943,863.09 - Step 4: Simplify right side
77,139,529.05x = 3,233,355,771,332,796 - Step 5: Solve for x
x = 3,233,355,771,332,796/77,139,529.05 - Step 6: Final answer
x = 41,915,679.43
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.