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Finding the Fourth Proportional to 32,139.60, 48,209.40 and 20,504.40

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Solution

The fourth proportional to 32,139.60, 48,209.40 and 20,504.40 is: 30,756.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,139.60 : 48,209.40 = 20,504.40 : x
  2. Step 2: Convert to fraction form
    32,139.60/48,209.40 = 20,504.40/x
  3. Step 3: Cross multiply
    32,139.60x = 48,209.40 × 20,504.40
  4. Step 4: Simplify right side
    32,139.60x = 988,504,821.36
  5. Step 5: Solve for x
    x = 988,504,821.36/32,139.60
  6. Step 6: Final answer
    x = 30,756.60

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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.