Finding the Fourth Proportional to 82,977,793.80, 124,466,690.70 and 78,726,265.80
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Solution
The fourth proportional to 82,977,793.80, 124,466,690.70 and 78,726,265.80 is: 118,089,398.70
Step by Step Solution
- Step 1: Write the proportion equation
82,977,793.80 : 124,466,690.70 = 78,726,265.80 : x - Step 2: Convert to fraction form
82,977,793.80/124,466,690.70 = 78,726,265.80/x - Step 3: Cross multiply
82,977,793.80x = 124,466,690.70 × 78,726,265.80 - Step 4: Simplify right side
82,977,793.80x = 9,798,797,775,294,588 - Step 5: Solve for x
x = 9,798,797,775,294,588/82,977,793.80 - Step 6: Final answer
x = 118,089,398.70
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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.