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Finding the Fourth Proportional to 38,426.40, 57,542.40 and 30,650.40

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Solution

The fourth proportional to 38,426.40, 57,542.40 and 30,650.40 is: 45,898.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,426.40 : 57,542.40 = 30,650.40 : x
  2. Step 2: Convert to fraction form
    38,426.40/57,542.40 = 30,650.40/x
  3. Step 3: Cross multiply
    38,426.40x = 57,542.40 × 30,650.40
  4. Step 4: Simplify right side
    38,426.40x = 1,763,697,576.96
  5. Step 5: Solve for x
    x = 1,763,697,576.96/38,426.40
  6. Step 6: Final answer
    x = 45,898.07

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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.