Home / 45,298.35-67,939.78-12,021.78

Finding the Fourth Proportional to 45,298.35, 67,939.78 and 12,021.78

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Solution

The fourth proportional to 45,298.35, 67,939.78 and 12,021.78 is: 18,030.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,298.35 : 67,939.78 = 12,021.78 : x
  2. Step 2: Convert to fraction form
    45,298.35/67,939.78 = 12,021.78/x
  3. Step 3: Cross multiply
    45,298.35x = 67,939.78 × 12,021.78
  4. Step 4: Simplify right side
    45,298.35x = 816,757,088.41
  5. Step 5: Solve for x
    x = 816,757,088.41/45,298.35
  6. Step 6: Final answer
    x = 18,030.61

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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.