Finding the Fourth Proportional to 87,660,205.80, 131,490,308.70 and 39,791,149.80
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Solution
The fourth proportional to 87,660,205.80, 131,490,308.70 and 39,791,149.80 is: 59,686,724.70
Step by Step Solution
- Step 1: Write the proportion equation
87,660,205.80 : 131,490,308.70 = 39,791,149.80 : x - Step 2: Convert to fraction form
87,660,205.80/131,490,308.70 = 39,791,149.80/x - Step 3: Cross multiply
87,660,205.80x = 131,490,308.70 × 39,791,149.80 - Step 4: Simplify right side
87,660,205.80x = 5,232,150,570,729,943 - Step 5: Solve for x
x = 5,232,150,570,729,943/87,660,205.80 - Step 6: Final answer
x = 59,686,724.70
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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.