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Finding the Fourth Proportional to 57,801.60, 79,833.60 and 38,908.80

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Solution

The fourth proportional to 57,801.60, 79,833.60 and 38,908.80 is: 53,739.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,801.60 : 79,833.60 = 38,908.80 : x
  2. Step 2: Convert to fraction form
    57,801.60/79,833.60 = 38,908.80/x
  3. Step 3: Cross multiply
    57,801.60x = 79,833.60 × 38,908.80
  4. Step 4: Simplify right side
    57,801.60x = 3,106,229,575.68
  5. Step 5: Solve for x
    x = 3,106,229,575.68/57,801.60
  6. Step 6: Final answer
    x = 53,739.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.