Home / 45,139.62-67,725.63-20,177.58

Finding the Fourth Proportional to 45,139.62, 67,725.63 and 20,177.58

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Solution

The fourth proportional to 45,139.62, 67,725.63 and 20,177.58 is: 30,273.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,139.62 : 67,725.63 = 20,177.58 : x
  2. Step 2: Convert to fraction form
    45,139.62/67,725.63 = 20,177.58/x
  3. Step 3: Cross multiply
    45,139.62x = 67,725.63 × 20,177.58
  4. Step 4: Simplify right side
    45,139.62x = 1,366,539,317.38
  5. Step 5: Solve for x
    x = 1,366,539,317.38/45,139.62
  6. Step 6: Final answer
    x = 30,273.61

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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.