Finding the Fourth Proportional to 80,762,528.80, 121,143,793.20 and 48,513,901.60
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Solution
The fourth proportional to 80,762,528.80, 121,143,793.20 and 48,513,901.60 is: 72,770,852.40
Step by Step Solution
- Step 1: Write the proportion equation
80,762,528.80 : 121,143,793.20 = 48,513,901.60 : x - Step 2: Convert to fraction form
80,762,528.80/121,143,793.20 = 48,513,901.60/x - Step 3: Cross multiply
80,762,528.80x = 121,143,793.20 × 48,513,901.60 - Step 4: Simplify right side
80,762,528.80x = 5,877,158,062,755,549 - Step 5: Solve for x
x = 5,877,158,062,755,549/80,762,528.80 - Step 6: Final answer
x = 72,770,852.40
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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.