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Finding the Fourth Proportional to 38,410.80, 57,562.20 and 30,526.80

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Solution

The fourth proportional to 38,410.80, 57,562.20 and 30,526.80 is: 45,747.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,410.80 : 57,562.20 = 30,526.80 : x
  2. Step 2: Convert to fraction form
    38,410.80/57,562.20 = 30,526.80/x
  3. Step 3: Cross multiply
    38,410.80x = 57,562.20 × 30,526.80
  4. Step 4: Simplify right side
    38,410.80x = 1,757,189,766.96
  5. Step 5: Solve for x
    x = 1,757,189,766.96/38,410.80
  6. Step 6: Final answer
    x = 45,747.28

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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.