Finding the Fourth Proportional to 80,722,513.80, 121,083,770.70 and 76,470,985.80
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Solution
The fourth proportional to 80,722,513.80, 121,083,770.70 and 76,470,985.80 is: 114,706,478.70
Step by Step Solution
- Step 1: Write the proportion equation
80,722,513.80 : 121,083,770.70 = 76,470,985.80 : x - Step 2: Convert to fraction form
80,722,513.80/121,083,770.70 = 76,470,985.80/x - Step 3: Cross multiply
80,722,513.80x = 121,083,770.70 × 76,470,985.80 - Step 4: Simplify right side
80,722,513.80x = 9,259,395,309,810,156 - Step 5: Solve for x
x = 9,259,395,309,810,156/80,722,513.80 - Step 6: Final answer
x = 114,706,478.70
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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.