Home / 20,785,256,858.70-31,177,885,288.05-20,372,008,337.10

Finding the Fourth Proportional to 20,785,256,858.70, 31,177,885,288.05 and 20,372,008,337.10

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Solution

The fourth proportional to 20,785,256,858.70, 31,177,885,288.05 and 20,372,008,337.10 is: 30,558,012,505.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,785,256,858.70 : 31,177,885,288.05 = 20,372,008,337.10 : x
  2. Step 2: Convert to fraction form
    20,785,256,858.70/31,177,885,288.05 = 20,372,008,337.10/x
  3. Step 3: Cross multiply
    20,785,256,858.70x = 31,177,885,288.05 × 20,372,008,337.10
  4. Step 4: Simplify right side
    20,785,256,858.70x = 635,156,139,021,301,972,992
  5. Step 5: Solve for x
    x = 635,156,139,021,301,972,992/20,785,256,858.70
  6. Step 6: Final answer
    x = 30,558,012,505.65

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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.