Home / 81,383.81-121,977.29-41,919.39

Finding the Fourth Proportional to 81,383.81, 121,977.29 and 41,919.39

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Solution

The fourth proportional to 81,383.81, 121,977.29 and 41,919.39 is: 62,828.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,383.81 : 121,977.29 = 41,919.39 : x
  2. Step 2: Convert to fraction form
    81,383.81/121,977.29 = 41,919.39/x
  3. Step 3: Cross multiply
    81,383.81x = 121,977.29 × 41,919.39
  4. Step 4: Simplify right side
    81,383.81x = 5,113,213,590.65
  5. Step 5: Solve for x
    x = 5,113,213,590.65/81,383.81
  6. Step 6: Final answer
    x = 62,828.39

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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.