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Finding the Fourth Proportional to 48,339.59, 72,512.84 and 20,231.34

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Solution

The fourth proportional to 48,339.59, 72,512.84 and 20,231.34 is: 30,348.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,339.59 : 72,512.84 = 20,231.34 : x
  2. Step 2: Convert to fraction form
    48,339.59/72,512.84 = 20,231.34/x
  3. Step 3: Cross multiply
    48,339.59x = 72,512.84 × 20,231.34
  4. Step 4: Simplify right side
    48,339.59x = 1,467,031,920.41
  5. Step 5: Solve for x
    x = 1,467,031,920.41/48,339.59
  6. Step 6: Final answer
    x = 30,348.46

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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.