Home / 84,657.14-126,984.42-20,615.88

Finding the Fourth Proportional to 84,657.14, 126,984.42 and 20,615.88

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Solution

The fourth proportional to 84,657.14, 126,984.42 and 20,615.88 is: 30,923.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,657.14 : 126,984.42 = 20,615.88 : x
  2. Step 2: Convert to fraction form
    84,657.14/126,984.42 = 20,615.88/x
  3. Step 3: Cross multiply
    84,657.14x = 126,984.42 × 20,615.88
  4. Step 4: Simplify right side
    84,657.14x = 2,617,895,564.59
  5. Step 5: Solve for x
    x = 2,617,895,564.59/84,657.14
  6. Step 6: Final answer
    x = 30,923.51

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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.