Finding the Fourth Proportional to 81,565,230.80, 122,347,846.20 and 57,331,521.20
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Solution
The fourth proportional to 81,565,230.80, 122,347,846.20 and 57,331,521.20 is: 85,997,281.80
Step by Step Solution
- Step 1: Write the proportion equation
81,565,230.80 : 122,347,846.20 = 57,331,521.20 : x - Step 2: Convert to fraction form
81,565,230.80/122,347,846.20 = 57,331,521.20/x - Step 3: Cross multiply
81,565,230.80x = 122,347,846.20 × 57,331,521.20 - Step 4: Simplify right side
81,565,230.80x = 7,014,388,138,189,640 - Step 5: Solve for x
x = 7,014,388,138,189,640/81,565,230.80 - Step 6: Final answer
x = 85,997,281.80
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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.