Home / 45,249.45-67,900.64-18,951.99

Finding the Fourth Proportional to 45,249.45, 67,900.64 and 18,951.99

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Solution

The fourth proportional to 45,249.45, 67,900.64 and 18,951.99 is: 28,439.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,249.45 : 67,900.64 = 18,951.99 : x
  2. Step 2: Convert to fraction form
    45,249.45/67,900.64 = 18,951.99/x
  3. Step 3: Cross multiply
    45,249.45x = 67,900.64 × 18,951.99
  4. Step 4: Simplify right side
    45,249.45x = 1,286,852,155.51
  5. Step 5: Solve for x
    x = 1,286,852,155.51/45,249.45
  6. Step 6: Final answer
    x = 28,439.07

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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.