Home / 81,134.18-111,961.17-45,317.06

Finding the Fourth Proportional to 81,134.18, 111,961.17 and 45,317.06

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Solution

The fourth proportional to 81,134.18, 111,961.17 and 45,317.06 is: 62,535.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,134.18 : 111,961.17 = 45,317.06 : x
  2. Step 2: Convert to fraction form
    81,134.18/111,961.17 = 45,317.06/x
  3. Step 3: Cross multiply
    81,134.18x = 111,961.17 × 45,317.06
  4. Step 4: Simplify right side
    81,134.18x = 5,073,751,058.56
  5. Step 5: Solve for x
    x = 5,073,751,058.56/81,134.18
  6. Step 6: Final answer
    x = 62,535.31

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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.