Finding the Fourth Proportional to 45,791,631.12, 68,718,939.36 and 18,865,287.12
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Solution
The fourth proportional to 45,791,631.12, 68,718,939.36 and 18,865,287.12 is: 28,310,905.07
Step by Step Solution
- Step 1: Write the proportion equation
45,791,631.12 : 68,718,939.36 = 18,865,287.12 : x - Step 2: Convert to fraction form
45,791,631.12/68,718,939.36 = 18,865,287.12/x - Step 3: Cross multiply
45,791,631.12x = 68,718,939.36 × 18,865,287.12 - Step 4: Simplify right side
45,791,631.12x = 1,296,402,521,608,269 - Step 5: Solve for x
x = 1,296,402,521,608,269/45,791,631.12 - Step 6: Final answer
x = 28,310,905.07
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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.