Finding the Fourth Proportional to 80,937,291.80, 121,405,937.70 and 72,434,235.80
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Solution
The fourth proportional to 80,937,291.80, 121,405,937.70 and 72,434,235.80 is: 108,651,353.70
Step by Step Solution
- Step 1: Write the proportion equation
80,937,291.80 : 121,405,937.70 = 72,434,235.80 : x - Step 2: Convert to fraction form
80,937,291.80/121,405,937.70 = 72,434,235.80/x - Step 3: Cross multiply
80,937,291.80x = 121,405,937.70 × 72,434,235.80 - Step 4: Simplify right side
80,937,291.80x = 8,793,946,318,881,910 - Step 5: Solve for x
x = 8,793,946,318,881,910/80,937,291.80 - Step 6: Final answer
x = 108,651,353.70
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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.