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Finding the Fourth Proportional to 38,648.40, 57,972.60 and 23,809.20

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Solution

The fourth proportional to 38,648.40, 57,972.60 and 23,809.20 is: 35,713.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,648.40 : 57,972.60 = 23,809.20 : x
  2. Step 2: Convert to fraction form
    38,648.40/57,972.60 = 23,809.20/x
  3. Step 3: Cross multiply
    38,648.40x = 57,972.60 × 23,809.20
  4. Step 4: Simplify right side
    38,648.40x = 1,380,281,227.92
  5. Step 5: Solve for x
    x = 1,380,281,227.92/38,648.40
  6. Step 6: Final answer
    x = 35,713.80

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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.