Home / 85,568.12-128,245.20-41,182.96

Finding the Fourth Proportional to 85,568.12, 128,245.20 and 41,182.96

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Solution

The fourth proportional to 85,568.12, 128,245.20 and 41,182.96 is: 61,722.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,568.12 : 128,245.20 = 41,182.96 : x
  2. Step 2: Convert to fraction form
    85,568.12/128,245.20 = 41,182.96/x
  3. Step 3: Cross multiply
    85,568.12x = 128,245.20 × 41,182.96
  4. Step 4: Simplify right side
    85,568.12x = 5,281,516,941.79
  5. Step 5: Solve for x
    x = 5,281,516,941.79/85,568.12
  6. Step 6: Final answer
    x = 61,722.95

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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.