Finding the Fourth Proportional to 66,261,803.58, 91,440,197.07 and 38,764,390.14
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Solution
The fourth proportional to 66,261,803.58, 91,440,197.07 and 38,764,390.14 is: 53,494,219.63
Step by Step Solution
- Step 1: Write the proportion equation
66,261,803.58 : 91,440,197.07 = 38,764,390.14 : x - Step 2: Convert to fraction form
66,261,803.58/91,440,197.07 = 38,764,390.14/x - Step 3: Cross multiply
66,261,803.58x = 91,440,197.07 × 38,764,390.14 - Step 4: Simplify right side
66,261,803.58x = 3,544,623,473,699,964.50 - Step 5: Solve for x
x = 3,544,623,473,699,964.50/66,261,803.58 - Step 6: Final answer
x = 53,494,219.63
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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.