Home / 57,185.20-85,777.80-53,977.60

Finding the Fourth Proportional to 57,185.20, 85,777.80 and 53,977.60

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Solution

The fourth proportional to 57,185.20, 85,777.80 and 53,977.60 is: 80,966.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,185.20 : 85,777.80 = 53,977.60 : x
  2. Step 2: Convert to fraction form
    57,185.20/85,777.80 = 53,977.60/x
  3. Step 3: Cross multiply
    57,185.20x = 85,777.80 × 53,977.60
  4. Step 4: Simplify right side
    57,185.20x = 4,630,079,777.28
  5. Step 5: Solve for x
    x = 4,630,079,777.28/57,185.20
  6. Step 6: Final answer
    x = 80,966.40

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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.