Home / 70,619.40-105,928.94-18,028.88

Finding the Fourth Proportional to 70,619.40, 105,928.94 and 18,028.88

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Solution

The fourth proportional to 70,619.40, 105,928.94 and 18,028.88 is: 27,043.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,619.40 : 105,928.94 = 18,028.88 : x
  2. Step 2: Convert to fraction form
    70,619.40/105,928.94 = 18,028.88/x
  3. Step 3: Cross multiply
    70,619.40x = 105,928.94 × 18,028.88
  4. Step 4: Simplify right side
    70,619.40x = 1,909,780,147.79
  5. Step 5: Solve for x
    x = 1,909,780,147.79/70,619.40
  6. Step 6: Final answer
    x = 27,043.28

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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.