Finding the Fourth Proportional to 72,612,134.20, 108,918,201.30 and 27,168,023.80
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Solution
The fourth proportional to 72,612,134.20, 108,918,201.30 and 27,168,023.80 is: 40,752,035.70
Step by Step Solution
- Step 1: Write the proportion equation
72,612,134.20 : 108,918,201.30 = 27,168,023.80 : x - Step 2: Convert to fraction form
72,612,134.20/108,918,201.30 = 27,168,023.80/x - Step 3: Cross multiply
72,612,134.20x = 108,918,201.30 × 27,168,023.80 - Step 4: Simplify right side
72,612,134.20x = 2,959,092,285,171,591 - Step 5: Solve for x
x = 2,959,092,285,171,591/72,612,134.20 - Step 6: Final answer
x = 40,752,035.70
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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.