Finding the Fourth Proportional to 77,621,375.12, 107,115,620.27 and 42,813,318.42
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Solution
The fourth proportional to 77,621,375.12, 107,115,620.27 and 42,813,318.42 is: 59,081,343.91
Step by Step Solution
- Step 1: Write the proportion equation
77,621,375.12 : 107,115,620.27 = 42,813,318.42 : x - Step 2: Convert to fraction form
77,621,375.12/107,115,620.27 = 42,813,318.42/x - Step 3: Cross multiply
77,621,375.12x = 107,115,620.27 × 42,813,318.42 - Step 4: Simplify right side
77,621,375.12x = 4,585,975,158,161,250 - Step 5: Solve for x
x = 4,585,975,158,161,250/77,621,375.12 - Step 6: Final answer
x = 59,081,343.91
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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.