Home / 45,172.15-67,761.72-13,579.75

Finding the Fourth Proportional to 45,172.15, 67,761.72 and 13,579.75

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Solution

The fourth proportional to 45,172.15, 67,761.72 and 13,579.75 is: 20,370.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,172.15 : 67,761.72 = 13,579.75 : x
  2. Step 2: Convert to fraction form
    45,172.15/67,761.72 = 13,579.75/x
  3. Step 3: Cross multiply
    45,172.15x = 67,761.72 × 13,579.75
  4. Step 4: Simplify right side
    45,172.15x = 920,187,217.17
  5. Step 5: Solve for x
    x = 920,187,217.17/45,172.15
  6. Step 6: Final answer
    x = 20,370.68

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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.