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Finding the Fourth Proportional to 79,785.20, 119,620.20 and 44,735.60

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Solution

The fourth proportional to 79,785.20, 119,620.20 and 44,735.60 is: 67,071.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,785.20 : 119,620.20 = 44,735.60 : x
  2. Step 2: Convert to fraction form
    79,785.20/119,620.20 = 44,735.60/x
  3. Step 3: Cross multiply
    79,785.20x = 119,620.20 × 44,735.60
  4. Step 4: Simplify right side
    79,785.20x = 5,351,281,419.12
  5. Step 5: Solve for x
    x = 5,351,281,419.12/79,785.20
  6. Step 6: Final answer
    x = 67,071.10

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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.