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Finding the Fourth Proportional to 57,290.53, 85,924.68 and 28,819.90

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Solution

The fourth proportional to 57,290.53, 85,924.68 and 28,819.90 is: 43,224.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,290.53 : 85,924.68 = 28,819.90 : x
  2. Step 2: Convert to fraction form
    57,290.53/85,924.68 = 28,819.90/x
  3. Step 3: Cross multiply
    57,290.53x = 85,924.68 × 28,819.90
  4. Step 4: Simplify right side
    57,290.53x = 2,476,340,685.13
  5. Step 5: Solve for x
    x = 2,476,340,685.13/57,290.53
  6. Step 6: Final answer
    x = 43,224.26

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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.