Home / 57,171.20-85,987.20-51,180.80

Finding the Fourth Proportional to 57,171.20, 85,987.20 and 51,180.80

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Solution

The fourth proportional to 57,171.20, 85,987.20 and 51,180.80 is: 76,977.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,171.20 : 85,987.20 = 51,180.80 : x
  2. Step 2: Convert to fraction form
    57,171.20/85,987.20 = 51,180.80/x
  3. Step 3: Cross multiply
    57,171.20x = 85,987.20 × 51,180.80
  4. Step 4: Simplify right side
    57,171.20x = 4,400,893,685.76
  5. Step 5: Solve for x
    x = 4,400,893,685.76/57,171.20
  6. Step 6: Final answer
    x = 76,977.46

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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.