Finding the Fourth Proportional to 80,928,622.80, 121,392,934.20 and 72,425,566.80
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Solution
The fourth proportional to 80,928,622.80, 121,392,934.20 and 72,425,566.80 is: 108,638,350.20
Step by Step Solution
- Step 1: Write the proportion equation
80,928,622.80 : 121,392,934.20 = 72,425,566.80 : x - Step 2: Convert to fraction form
80,928,622.80/121,392,934.20 = 72,425,566.80/x - Step 3: Cross multiply
80,928,622.80x = 121,392,934.20 × 72,425,566.80 - Step 4: Simplify right side
80,928,622.80x = 8,791,952,064,950,104 - Step 5: Solve for x
x = 8,791,952,064,950,104/80,928,622.80 - Step 6: Final answer
x = 108,638,350.20
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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.