Home / 31,096,389-42,910,326.90-20,083,619.40

Finding the Fourth Proportional to 31,096,389, 42,910,326.90 and 20,083,619.40

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Solution

The fourth proportional to 31,096,389, 42,910,326.90 and 20,083,619.40 is: 27,713,657.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,096,389 : 42,910,326.90 = 20,083,619.40 : x
  2. Step 2: Convert to fraction form
    31,096,389/42,910,326.90 = 20,083,619.40/x
  3. Step 3: Cross multiply
    31,096,389x = 42,910,326.90 × 20,083,619.40
  4. Step 4: Simplify right side
    31,096,389x = 861,794,673,789,181.75
  5. Step 5: Solve for x
    x = 861,794,673,789,181.75/31,096,389
  6. Step 6: Final answer
    x = 27,713,657.49

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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.