Home / 57,423.20-85,964.70-42,697.40

Finding the Fourth Proportional to 57,423.20, 85,964.70 and 42,697.40

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Solution

The fourth proportional to 57,423.20, 85,964.70 and 42,697.40 is: 63,919.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,423.20 : 85,964.70 = 42,697.40 : x
  2. Step 2: Convert to fraction form
    57,423.20/85,964.70 = 42,697.40/x
  3. Step 3: Cross multiply
    57,423.20x = 85,964.70 × 42,697.40
  4. Step 4: Simplify right side
    57,423.20x = 3,670,469,181.78
  5. Step 5: Solve for x
    x = 3,670,469,181.78/57,423.20
  6. Step 6: Final answer
    x = 63,919.62

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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.