Home / 45,172.44-67,768.36-13,579.87

Finding the Fourth Proportional to 45,172.44, 67,768.36 and 13,579.87

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Solution

The fourth proportional to 45,172.44, 67,768.36 and 13,579.87 is: 20,372.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,172.44 : 67,768.36 = 13,579.87 : x
  2. Step 2: Convert to fraction form
    45,172.44/67,768.36 = 13,579.87/x
  3. Step 3: Cross multiply
    45,172.44x = 67,768.36 × 13,579.87
  4. Step 4: Simplify right side
    45,172.44x = 920,285,518.91
  5. Step 5: Solve for x
    x = 920,285,518.91/45,172.44
  6. Step 6: Final answer
    x = 20,372.72

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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.