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Finding the Fourth Proportional to 57,671.44, 79,565.04 and 38,778.64

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Solution

The fourth proportional to 57,671.44, 79,565.04 and 38,778.64 is: 53,500.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,671.44 : 79,565.04 = 38,778.64 : x
  2. Step 2: Convert to fraction form
    57,671.44/79,565.04 = 38,778.64/x
  3. Step 3: Cross multiply
    57,671.44x = 79,565.04 × 38,778.64
  4. Step 4: Simplify right side
    57,671.44x = 3,085,424,042.75
  5. Step 5: Solve for x
    x = 3,085,424,042.75/57,671.44
  6. Step 6: Final answer
    x = 53,500.03

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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.