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Finding the Fourth Proportional to 57,455.60, 86,183.40 and 39,959.60

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Solution

The fourth proportional to 57,455.60, 86,183.40 and 39,959.60 is: 59,939.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,455.60 : 86,183.40 = 39,959.60 : x
  2. Step 2: Convert to fraction form
    57,455.60/86,183.40 = 39,959.60/x
  3. Step 3: Cross multiply
    57,455.60x = 86,183.40 × 39,959.60
  4. Step 4: Simplify right side
    57,455.60x = 3,443,854,190.64
  5. Step 5: Solve for x
    x = 3,443,854,190.64/57,455.60
  6. Step 6: Final answer
    x = 59,939.40

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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.