Finding the Fourth Proportional to 66,488,318.81, 91,762,343.94 and 38,605,478.21
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Solution
The fourth proportional to 66,488,318.81, 91,762,343.94 and 38,605,478.21 is: 53,280,474.42
Step by Step Solution
- Step 1: Write the proportion equation
66,488,318.81 : 91,762,343.94 = 38,605,478.21 : x - Step 2: Convert to fraction form
66,488,318.81/91,762,343.94 = 38,605,478.21/x - Step 3: Cross multiply
66,488,318.81x = 91,762,343.94 × 38,605,478.21 - Step 4: Simplify right side
66,488,318.81x = 3,542,529,169,015,383.50 - Step 5: Solve for x
x = 3,542,529,169,015,383.50/66,488,318.81 - Step 6: Final answer
x = 53,280,474.42
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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.