Home / 81,488,381.20-122,232,571.80-20,904,107.20

Finding the Fourth Proportional to 81,488,381.20, 122,232,571.80 and 20,904,107.20

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Solution

The fourth proportional to 81,488,381.20, 122,232,571.80 and 20,904,107.20 is: 31,356,160.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,488,381.20 : 122,232,571.80 = 20,904,107.20 : x
  2. Step 2: Convert to fraction form
    81,488,381.20/122,232,571.80 = 20,904,107.20/x
  3. Step 3: Cross multiply
    81,488,381.20x = 122,232,571.80 × 20,904,107.20
  4. Step 4: Simplify right side
    81,488,381.20x = 2,555,162,784,238,897
  5. Step 5: Solve for x
    x = 2,555,162,784,238,897/81,488,381.20
  6. Step 6: Final answer
    x = 31,356,160.80

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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.