Home / 45,415.58-68,129.64-12,136.73

Finding the Fourth Proportional to 45,415.58, 68,129.64 and 12,136.73

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Solution

The fourth proportional to 45,415.58, 68,129.64 and 12,136.73 is: 18,206.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,415.58 : 68,129.64 = 12,136.73 : x
  2. Step 2: Convert to fraction form
    45,415.58/68,129.64 = 12,136.73/x
  3. Step 3: Cross multiply
    45,415.58x = 68,129.64 × 12,136.73
  4. Step 4: Simplify right side
    45,415.58x = 826,870,705.03
  5. Step 5: Solve for x
    x = 826,870,705.03/45,415.58
  6. Step 6: Final answer
    x = 18,206.77

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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.