Home / 45,120.68-67,667.34-18,819.27

Finding the Fourth Proportional to 45,120.68, 67,667.34 and 18,819.27

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Solution

The fourth proportional to 45,120.68, 67,667.34 and 18,819.27 is: 28,223.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,120.68 : 67,667.34 = 18,819.27 : x
  2. Step 2: Convert to fraction form
    45,120.68/67,667.34 = 18,819.27/x
  3. Step 3: Cross multiply
    45,120.68x = 67,667.34 × 18,819.27
  4. Step 4: Simplify right side
    45,120.68x = 1,273,450,012.21
  5. Step 5: Solve for x
    x = 1,273,450,012.21/45,120.68
  6. Step 6: Final answer
    x = 28,223.20

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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.