Home / 90,078.76-135,137.46-26,903.86

Finding the Fourth Proportional to 90,078.76, 135,137.46 and 26,903.86

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Solution

The fourth proportional to 90,078.76, 135,137.46 and 26,903.86 is: 40,361.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,078.76 : 135,137.46 = 26,903.86 : x
  2. Step 2: Convert to fraction form
    90,078.76/135,137.46 = 26,903.86/x
  3. Step 3: Cross multiply
    90,078.76x = 135,137.46 × 26,903.86
  4. Step 4: Simplify right side
    90,078.76x = 3,635,719,304.60
  5. Step 5: Solve for x
    x = 3,635,719,304.60/90,078.76
  6. Step 6: Final answer
    x = 40,361.56

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1.5x scale

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.