Finding the Fourth Proportional to 66,936,842.40, 99,954,509.86 and 54,665,149.95
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Solution
The fourth proportional to 66,936,842.40, 99,954,509.86 and 54,665,149.95 is: 81,629,608.95
Step by Step Solution
- Step 1: Write the proportion equation
66,936,842.40 : 99,954,509.86 = 54,665,149.95 : x - Step 2: Convert to fraction form
66,936,842.40/99,954,509.86 = 54,665,149.95/x - Step 3: Cross multiply
66,936,842.40x = 99,954,509.86 × 54,665,149.95 - Step 4: Simplify right side
66,936,842.40x = 5,464,028,269,175,881 - Step 5: Solve for x
x = 5,464,028,269,175,881/66,936,842.40 - Step 6: Final answer
x = 81,629,608.95
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.