Home / 90,604.20-135,906.30-56,924.40

Finding the Fourth Proportional to 90,604.20, 135,906.30 and 56,924.40

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Solution

The fourth proportional to 90,604.20, 135,906.30 and 56,924.40 is: 85,386.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,604.20 : 135,906.30 = 56,924.40 : x
  2. Step 2: Convert to fraction form
    90,604.20/135,906.30 = 56,924.40/x
  3. Step 3: Cross multiply
    90,604.20x = 135,906.30 × 56,924.40
  4. Step 4: Simplify right side
    90,604.20x = 7,736,384,583.72
  5. Step 5: Solve for x
    x = 7,736,384,583.72/90,604.20
  6. Step 6: Final answer
    x = 85,386.60

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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.