Finding the Fourth Proportional to 66,979,241.62, 100,322,382.84 and 47,489,390.71
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Solution
The fourth proportional to 66,979,241.62, 100,322,382.84 and 47,489,390.71 is: 71,130,229.61
Step by Step Solution
- Step 1: Write the proportion equation
66,979,241.62 : 100,322,382.84 = 47,489,390.71 : x - Step 2: Convert to fraction form
66,979,241.62/100,322,382.84 = 47,489,390.71/x - Step 3: Cross multiply
66,979,241.62x = 100,322,382.84 × 47,489,390.71 - Step 4: Simplify right side
66,979,241.62x = 4,764,248,835,646,960 - Step 5: Solve for x
x = 4,764,248,835,646,960/66,979,241.62 - Step 6: Final answer
x = 71,130,229.61
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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.