Home / 81,609.12-122,436.54-29,023.92

Finding the Fourth Proportional to 81,609.12, 122,436.54 and 29,023.92

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Solution

The fourth proportional to 81,609.12, 122,436.54 and 29,023.92 is: 43,544.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,609.12 : 122,436.54 = 29,023.92 : x
  2. Step 2: Convert to fraction form
    81,609.12/122,436.54 = 29,023.92/x
  3. Step 3: Cross multiply
    81,609.12x = 122,436.54 × 29,023.92
  4. Step 4: Simplify right side
    81,609.12x = 3,553,588,342.04
  5. Step 5: Solve for x
    x = 3,553,588,342.04/81,609.12
  6. Step 6: Final answer
    x = 43,544.01

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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.