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Finding the Fourth Proportional to 39,883.87, 55,040.34 and 22,890.88

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Solution

The fourth proportional to 39,883.87, 55,040.34 and 22,890.88 is: 31,589.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,883.87 : 55,040.34 = 22,890.88 : x
  2. Step 2: Convert to fraction form
    39,883.87/55,040.34 = 22,890.88/x
  3. Step 3: Cross multiply
    39,883.87x = 55,040.34 × 22,890.88
  4. Step 4: Simplify right side
    39,883.87x = 1,259,921,818.10
  5. Step 5: Solve for x
    x = 1,259,921,818.10/39,883.87
  6. Step 6: Final answer
    x = 31,589.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.