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Finding the Fourth Proportional to 72,694,006.80, 109,041,010.20 and 26,635,786.80

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Solution

The fourth proportional to 72,694,006.80, 109,041,010.20 and 26,635,786.80 is: 39,953,680.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,694,006.80 : 109,041,010.20 = 26,635,786.80 : x
  2. Step 2: Convert to fraction form
    72,694,006.80/109,041,010.20 = 26,635,786.80/x
  3. Step 3: Cross multiply
    72,694,006.80x = 109,041,010.20 × 26,635,786.80
  4. Step 4: Simplify right side
    72,694,006.80x = 2,904,393,100,143,825.50
  5. Step 5: Solve for x
    x = 2,904,393,100,143,825.50/72,694,006.80
  6. Step 6: Final answer
    x = 39,953,680.20

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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.