Finding the Fourth Proportional to 80,722,487.80, 121,083,731.70 and 76,470,959.80
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Solution
The fourth proportional to 80,722,487.80, 121,083,731.70 and 76,470,959.80 is: 114,706,439.70
Step by Step Solution
- Step 1: Write the proportion equation
80,722,487.80 : 121,083,731.70 = 76,470,959.80 : x - Step 2: Convert to fraction form
80,722,487.80/121,083,731.70 = 76,470,959.80/x - Step 3: Cross multiply
80,722,487.80x = 121,083,731.70 × 76,470,959.80 - Step 4: Simplify right side
80,722,487.80x = 9,259,389,179,264,686 - Step 5: Solve for x
x = 9,259,389,179,264,686/80,722,487.80 - Step 6: Final answer
x = 114,706,439.70
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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.