Home / 39,942,353,631.62-55,119,766,784.28-21,631,262,911.44

Finding the Fourth Proportional to 39,942,353,631.62, 55,119,766,784.28 and 21,631,262,911.44

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Solution

The fourth proportional to 39,942,353,631.62, 55,119,766,784.28 and 21,631,262,911.44 is: 29,850,773,890.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,942,353,631.62 : 55,119,766,784.28 = 21,631,262,911.44 : x
  2. Step 2: Convert to fraction form
    39,942,353,631.62/55,119,766,784.28 = 21,631,262,911.44/x
  3. Step 3: Cross multiply
    39,942,353,631.62x = 55,119,766,784.28 × 21,631,262,911.44
  4. Step 4: Simplify right side
    39,942,353,631.62x = 1,192,310,166,928,018,374,656
  5. Step 5: Solve for x
    x = 1,192,310,166,928,018,374,656/39,942,353,631.62
  6. Step 6: Final answer
    x = 29,850,773,890.91

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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.