Home / 71,239.10-106,864.79-18,648.56

Finding the Fourth Proportional to 71,239.10, 106,864.79 and 18,648.56

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Solution

The fourth proportional to 71,239.10, 106,864.79 and 18,648.56 is: 27,974.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,239.10 : 106,864.79 = 18,648.56 : x
  2. Step 2: Convert to fraction form
    71,239.10/106,864.79 = 18,648.56/x
  3. Step 3: Cross multiply
    71,239.10x = 106,864.79 × 18,648.56
  4. Step 4: Simplify right side
    71,239.10x = 1,992,874,622.12
  5. Step 5: Solve for x
    x = 1,992,874,622.12/71,239.10
  6. Step 6: Final answer
    x = 27,974.45

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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.