Home / 90,015.60-135,023.40-40,863.60

Finding the Fourth Proportional to 90,015.60, 135,023.40 and 40,863.60

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Solution

The fourth proportional to 90,015.60, 135,023.40 and 40,863.60 is: 61,295.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,015.60 : 135,023.40 = 40,863.60 : x
  2. Step 2: Convert to fraction form
    90,015.60/135,023.40 = 40,863.60/x
  3. Step 3: Cross multiply
    90,015.60x = 135,023.40 × 40,863.60
  4. Step 4: Simplify right side
    90,015.60x = 5,517,542,208.24
  5. Step 5: Solve for x
    x = 5,517,542,208.24/90,015.60
  6. Step 6: Final answer
    x = 61,295.40

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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.