Finding the Fourth Proportional to 28,763,340.12, 39,642,078.42 and 21,777,279
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Solution
The fourth proportional to 28,763,340.12, 39,642,078.42 and 21,777,279 is: 30,013,781.37
Step by Step Solution
- Step 1: Write the proportion equation
28,763,340.12 : 39,642,078.42 = 21,777,279 : x - Step 2: Convert to fraction form
28,763,340.12/39,642,078.42 = 21,777,279/x - Step 3: Cross multiply
28,763,340.12x = 39,642,078.42 × 21,777,279 - Step 4: Simplify right side
28,763,340.12x = 863,296,601,892,219.25 - Step 5: Solve for x
x = 863,296,601,892,219.25/28,763,340.12 - Step 6: Final answer
x = 30,013,781.37
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.