Home / 81,817,791.32-122,694,792.42-30,671,903

Finding the Fourth Proportional to 81,817,791.32, 122,694,792.42 and 30,671,903

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Solution

The fourth proportional to 81,817,791.32, 122,694,792.42 and 30,671,903 is: 45,995,897.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,817,791.32 : 122,694,792.42 = 30,671,903 : x
  2. Step 2: Convert to fraction form
    81,817,791.32/122,694,792.42 = 30,671,903/x
  3. Step 3: Cross multiply
    81,817,791.32x = 122,694,792.42 × 30,671,903
  4. Step 4: Simplify right side
    81,817,791.32x = 3,763,282,771,711,375.50
  5. Step 5: Solve for x
    x = 3,763,282,771,711,375.50/81,817,791.32
  6. Step 6: Final answer
    x = 45,995,897.85

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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.