Home / 57,051.60-85,506.12-39,380.64

Finding the Fourth Proportional to 57,051.60, 85,506.12 and 39,380.64

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Solution

The fourth proportional to 57,051.60, 85,506.12 and 39,380.64 is: 59,021.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,051.60 : 85,506.12 = 39,380.64 : x
  2. Step 2: Convert to fraction form
    57,051.60/85,506.12 = 39,380.64/x
  3. Step 3: Cross multiply
    57,051.60x = 85,506.12 × 39,380.64
  4. Step 4: Simplify right side
    57,051.60x = 3,367,285,729.52
  5. Step 5: Solve for x
    x = 3,367,285,729.52/57,051.60
  6. Step 6: Final answer
    x = 59,021.76

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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.