Home / 43,287.20-64,930.80-28,504.70

Finding the Fourth Proportional to 43,287.20, 64,930.80 and 28,504.70

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Solution

The fourth proportional to 43,287.20, 64,930.80 and 28,504.70 is: 42,757.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,287.20 : 64,930.80 = 28,504.70 : x
  2. Step 2: Convert to fraction form
    43,287.20/64,930.80 = 28,504.70/x
  3. Step 3: Cross multiply
    43,287.20x = 64,930.80 × 28,504.70
  4. Step 4: Simplify right side
    43,287.20x = 1,850,832,974.76
  5. Step 5: Solve for x
    x = 1,850,832,974.76/43,287.20
  6. Step 6: Final answer
    x = 42,757.05

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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.