Home / 81,301.04-121,939.23-22,141.36

Finding the Fourth Proportional to 81,301.04, 121,939.23 and 22,141.36

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Solution

The fourth proportional to 81,301.04, 121,939.23 and 22,141.36 is: 33,208.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,301.04 : 121,939.23 = 22,141.36 : x
  2. Step 2: Convert to fraction form
    81,301.04/121,939.23 = 22,141.36/x
  3. Step 3: Cross multiply
    81,301.04x = 121,939.23 × 22,141.36
  4. Step 4: Simplify right side
    81,301.04x = 2,699,900,278.85
  5. Step 5: Solve for x
    x = 2,699,900,278.85/81,301.04
  6. Step 6: Final answer
    x = 33,208.68

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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.