Home / 43,819.60-65,729.40-28,073.20

Finding the Fourth Proportional to 43,819.60, 65,729.40 and 28,073.20

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Solution

The fourth proportional to 43,819.60, 65,729.40 and 28,073.20 is: 42,109.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,819.60 : 65,729.40 = 28,073.20 : x
  2. Step 2: Convert to fraction form
    43,819.60/65,729.40 = 28,073.20/x
  3. Step 3: Cross multiply
    43,819.60x = 65,729.40 × 28,073.20
  4. Step 4: Simplify right side
    43,819.60x = 1,845,234,592.08
  5. Step 5: Solve for x
    x = 1,845,234,592.08/43,819.60
  6. Step 6: Final answer
    x = 42,109.80

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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.