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Finding the Fourth Proportional to 40,480.20, 60,671.70 and 20,748.60

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Solution

The fourth proportional to 40,480.20, 60,671.70 and 20,748.60 is: 31,097.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,480.20 : 60,671.70 = 20,748.60 : x
  2. Step 2: Convert to fraction form
    40,480.20/60,671.70 = 20,748.60/x
  3. Step 3: Cross multiply
    40,480.20x = 60,671.70 × 20,748.60
  4. Step 4: Simplify right side
    40,480.20x = 1,258,852,834.62
  5. Step 5: Solve for x
    x = 1,258,852,834.62/40,480.20
  6. Step 6: Final answer
    x = 31,097.99

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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.