Home / 57,778.20-86,667.30-47,280.60

Finding the Fourth Proportional to 57,778.20, 86,667.30 and 47,280.60

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Solution

The fourth proportional to 57,778.20, 86,667.30 and 47,280.60 is: 70,920.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,778.20 : 86,667.30 = 47,280.60 : x
  2. Step 2: Convert to fraction form
    57,778.20/86,667.30 = 47,280.60/x
  3. Step 3: Cross multiply
    57,778.20x = 86,667.30 × 47,280.60
  4. Step 4: Simplify right side
    57,778.20x = 4,097,681,944.38
  5. Step 5: Solve for x
    x = 4,097,681,944.38/57,778.20
  6. Step 6: Final answer
    x = 70,920.90

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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.