Finding the Fourth Proportional to 103,980,711.99, 143,497,866.57 and 57,570,965.94
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Solution
The fourth proportional to 103,980,711.99, 143,497,866.57 and 57,570,965.94 is: 79,450,415.67
Step by Step Solution
- Step 1: Write the proportion equation
103,980,711.99 : 143,497,866.57 = 57,570,965.94 : x - Step 2: Convert to fraction form
103,980,711.99/143,497,866.57 = 57,570,965.94/x - Step 3: Cross multiply
103,980,711.99x = 143,497,866.57 × 57,570,965.94 - Step 4: Simplify right side
103,980,711.99x = 8,261,310,788,764,134 - Step 5: Solve for x
x = 8,261,310,788,764,134/103,980,711.99 - Step 6: Final answer
x = 79,450,415.67
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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.