Home / 57,311.60-85,967.40-39,815.60

Finding the Fourth Proportional to 57,311.60, 85,967.40 and 39,815.60

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Solution

The fourth proportional to 57,311.60, 85,967.40 and 39,815.60 is: 59,723.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,311.60 : 85,967.40 = 39,815.60 : x
  2. Step 2: Convert to fraction form
    57,311.60/85,967.40 = 39,815.60/x
  3. Step 3: Cross multiply
    57,311.60x = 85,967.40 × 39,815.60
  4. Step 4: Simplify right side
    57,311.60x = 3,422,843,611.44
  5. Step 5: Solve for x
    x = 3,422,843,611.44/57,311.60
  6. Step 6: Final answer
    x = 59,723.40

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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.