Home / 43,180.40-64,789.42-15,120.60

Finding the Fourth Proportional to 43,180.40, 64,789.42 and 15,120.60

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Solution

The fourth proportional to 43,180.40, 64,789.42 and 15,120.60 is: 22,687.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,180.40 : 64,789.42 = 15,120.60 : x
  2. Step 2: Convert to fraction form
    43,180.40/64,789.42 = 15,120.60/x
  3. Step 3: Cross multiply
    43,180.40x = 64,789.42 × 15,120.60
  4. Step 4: Simplify right side
    43,180.40x = 979,654,904.05
  5. Step 5: Solve for x
    x = 979,654,904.05/43,180.40
  6. Step 6: Final answer
    x = 22,687.49

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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.