Home / 28,961.20-43,506.60-27,780.40

Finding the Fourth Proportional to 28,961.20, 43,506.60 and 27,780.40

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Solution

The fourth proportional to 28,961.20, 43,506.60 and 27,780.40 is: 41,732.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,961.20 : 43,506.60 = 27,780.40 : x
  2. Step 2: Convert to fraction form
    28,961.20/43,506.60 = 27,780.40/x
  3. Step 3: Cross multiply
    28,961.20x = 43,506.60 × 27,780.40
  4. Step 4: Simplify right side
    28,961.20x = 1,208,630,750.64
  5. Step 5: Solve for x
    x = 1,208,630,750.64/28,961.20
  6. Step 6: Final answer
    x = 41,732.76

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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.