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Finding the Fourth Proportional to 47,863.80, 71,763.30 and 25,378.20

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Solution

The fourth proportional to 47,863.80, 71,763.30 and 25,378.20 is: 38,050.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,863.80 : 71,763.30 = 25,378.20 : x
  2. Step 2: Convert to fraction form
    47,863.80/71,763.30 = 25,378.20/x
  3. Step 3: Cross multiply
    47,863.80x = 71,763.30 × 25,378.20
  4. Step 4: Simplify right side
    47,863.80x = 1,821,223,380.06
  5. Step 5: Solve for x
    x = 1,821,223,380.06/47,863.80
  6. Step 6: Final answer
    x = 38,050.12

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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.