Finding the Fourth Proportional to 81,777,830.40, 122,666,745.60 and 58,819,579.20
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Solution
The fourth proportional to 81,777,830.40, 122,666,745.60 and 58,819,579.20 is: 88,229,368.80
Step by Step Solution
- Step 1: Write the proportion equation
81,777,830.40 : 122,666,745.60 = 58,819,579.20 : x - Step 2: Convert to fraction form
81,777,830.40/122,666,745.60 = 58,819,579.20/x - Step 3: Cross multiply
81,777,830.40x = 122,666,745.60 × 58,819,579.20 - Step 4: Simplify right side
81,777,830.40x = 7,215,206,358,025,452 - Step 5: Solve for x
x = 7,215,206,358,025,452/81,777,830.40 - Step 6: Final answer
x = 88,229,368.80
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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.