Finding the Fourth Proportional to 80,762,527.80, 121,143,791.70 and 48,513,900.60
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Solution
The fourth proportional to 80,762,527.80, 121,143,791.70 and 48,513,900.60 is: 72,770,850.90
Step by Step Solution
- Step 1: Write the proportion equation
80,762,527.80 : 121,143,791.70 = 48,513,900.60 : x - Step 2: Convert to fraction form
80,762,527.80/121,143,791.70 = 48,513,900.60/x - Step 3: Cross multiply
80,762,527.80x = 121,143,791.70 × 48,513,900.60 - Step 4: Simplify right side
80,762,527.80x = 5,877,157,868,840,905 - Step 5: Solve for x
x = 5,877,157,868,840,905/80,762,527.80 - Step 6: Final answer
x = 72,770,850.90
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Double scale
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.