Home / 90,555.36-135,826.56-28,224

Finding the Fourth Proportional to 90,555.36, 135,826.56 and 28,224

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Solution

The fourth proportional to 90,555.36, 135,826.56 and 28,224 is: 42,333.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,555.36 : 135,826.56 = 28,224 : x
  2. Step 2: Convert to fraction form
    90,555.36/135,826.56 = 28,224/x
  3. Step 3: Cross multiply
    90,555.36x = 135,826.56 × 28,224
  4. Step 4: Simplify right side
    90,555.36x = 3,833,568,829.44
  5. Step 5: Solve for x
    x = 3,833,568,829.44/90,555.36
  6. Step 6: Final answer
    x = 42,333.98

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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.