Home / 81,203.03-121,749.09-43,257.96

Finding the Fourth Proportional to 81,203.03, 121,749.09 and 43,257.96

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Solution

The fourth proportional to 81,203.03, 121,749.09 and 43,257.96 is: 64,857.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,203.03 : 121,749.09 = 43,257.96 : x
  2. Step 2: Convert to fraction form
    81,203.03/121,749.09 = 43,257.96/x
  3. Step 3: Cross multiply
    81,203.03x = 121,749.09 × 43,257.96
  4. Step 4: Simplify right side
    81,203.03x = 5,266,617,265.26
  5. Step 5: Solve for x
    x = 5,266,617,265.26/81,203.03
  6. Step 6: Final answer
    x = 64,857.40

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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.