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Finding the Fourth Proportional to 57,873.20, 86,814.60 and 18,429.20

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Solution

The fourth proportional to 57,873.20, 86,814.60 and 18,429.20 is: 27,645.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,873.20 : 86,814.60 = 18,429.20 : x
  2. Step 2: Convert to fraction form
    57,873.20/86,814.60 = 18,429.20/x
  3. Step 3: Cross multiply
    57,873.20x = 86,814.60 × 18,429.20
  4. Step 4: Simplify right side
    57,873.20x = 1,599,923,626.32
  5. Step 5: Solve for x
    x = 1,599,923,626.32/57,873.20
  6. Step 6: Final answer
    x = 27,645.33

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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.