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Finding the Fourth Proportional to 57,634.64, 86,454.60 and 21,619.70

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Solution

The fourth proportional to 57,634.64, 86,454.60 and 21,619.70 is: 32,430.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,634.64 : 86,454.60 = 21,619.70 : x
  2. Step 2: Convert to fraction form
    57,634.64/86,454.60 = 21,619.70/x
  3. Step 3: Cross multiply
    57,634.64x = 86,454.60 × 21,619.70
  4. Step 4: Simplify right side
    57,634.64x = 1,869,122,448.09
  5. Step 5: Solve for x
    x = 1,869,122,448.09/57,634.64
  6. Step 6: Final answer
    x = 32,430.54

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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.