Finding the Fourth Proportional to 71,115,358.40, 106,673,037.60 and 48,157,107.20
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Solution
The fourth proportional to 71,115,358.40, 106,673,037.60 and 48,157,107.20 is: 72,235,660.80
Step by Step Solution
- Step 1: Write the proportion equation
71,115,358.40 : 106,673,037.60 = 48,157,107.20 : x - Step 2: Convert to fraction form
71,115,358.40/106,673,037.60 = 48,157,107.20/x - Step 3: Cross multiply
71,115,358.40x = 106,673,037.60 × 48,157,107.20 - Step 4: Simplify right side
71,115,358.40x = 5,137,064,907,052,831 - Step 5: Solve for x
x = 5,137,064,907,052,831/71,115,358.40 - Step 6: Final answer
x = 72,235,660.80
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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.