Home / 85,850.20-128,775.30-23,520.70

Finding the Fourth Proportional to 85,850.20, 128,775.30 and 23,520.70

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Solution

The fourth proportional to 85,850.20, 128,775.30 and 23,520.70 is: 35,281.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,850.20 : 128,775.30 = 23,520.70 : x
  2. Step 2: Convert to fraction form
    85,850.20/128,775.30 = 23,520.70/x
  3. Step 3: Cross multiply
    85,850.20x = 128,775.30 × 23,520.70
  4. Step 4: Simplify right side
    85,850.20x = 3,028,885,198.71
  5. Step 5: Solve for x
    x = 3,028,885,198.71/85,850.20
  6. Step 6: Final answer
    x = 35,281.05

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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.