Home / 56,739.20-85,141.20-39,221.60

Finding the Fourth Proportional to 56,739.20, 85,141.20 and 39,221.60

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Solution

The fourth proportional to 56,739.20, 85,141.20 and 39,221.60 is: 58,854.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,739.20 : 85,141.20 = 39,221.60 : x
  2. Step 2: Convert to fraction form
    56,739.20/85,141.20 = 39,221.60/x
  3. Step 3: Cross multiply
    56,739.20x = 85,141.20 × 39,221.60
  4. Step 4: Simplify right side
    56,739.20x = 3,339,374,089.92
  5. Step 5: Solve for x
    x = 3,339,374,089.92/56,739.20
  6. Step 6: Final answer
    x = 58,854.80

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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.