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Finding the Fourth Proportional to 79,445.92, 119,168.77 and 20,281.60

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Solution

The fourth proportional to 79,445.92, 119,168.77 and 20,281.60 is: 30,422.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,445.92 : 119,168.77 = 20,281.60 : x
  2. Step 2: Convert to fraction form
    79,445.92/119,168.77 = 20,281.60/x
  3. Step 3: Cross multiply
    79,445.92x = 119,168.77 × 20,281.60
  4. Step 4: Simplify right side
    79,445.92x = 2,416,933,325.63
  5. Step 5: Solve for x
    x = 2,416,933,325.63/79,445.92
  6. Step 6: Final answer
    x = 30,422.37

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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.