Finding the Fourth Proportional to 74,724,687.12, 103,117,728.56 and 43,805,449.20
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Solution
The fourth proportional to 74,724,687.12, 103,117,728.56 and 43,805,449.20 is: 60,450,148.33
Step by Step Solution
- Step 1: Write the proportion equation
74,724,687.12 : 103,117,728.56 = 43,805,449.20 : x - Step 2: Convert to fraction form
74,724,687.12/103,117,728.56 = 43,805,449.20/x - Step 3: Cross multiply
74,724,687.12x = 103,117,728.56 × 43,805,449.20 - Step 4: Simplify right side
74,724,687.12x = 4,517,118,420,054,470 - Step 5: Solve for x
x = 4,517,118,420,054,470/74,724,687.12 - Step 6: Final answer
x = 60,450,148.33
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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.