Home / 70,579.74-105,867.09-17,988.78

Finding the Fourth Proportional to 70,579.74, 105,867.09 and 17,988.78

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Solution

The fourth proportional to 70,579.74, 105,867.09 and 17,988.78 is: 26,982.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,579.74 : 105,867.09 = 17,988.78 : x
  2. Step 2: Convert to fraction form
    70,579.74/105,867.09 = 17,988.78/x
  3. Step 3: Cross multiply
    70,579.74x = 105,867.09 × 17,988.78
  4. Step 4: Simplify right side
    70,579.74x = 1,904,419,791.25
  5. Step 5: Solve for x
    x = 1,904,419,791.25/70,579.74
  6. Step 6: Final answer
    x = 26,982.53

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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.