Home / 49,929.10-74,857.20-20,331.70

Finding the Fourth Proportional to 49,929.10, 74,857.20 and 20,331.70

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Solution

The fourth proportional to 49,929.10, 74,857.20 and 20,331.70 is: 30,482.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,929.10 : 74,857.20 = 20,331.70 : x
  2. Step 2: Convert to fraction form
    49,929.10/74,857.20 = 20,331.70/x
  3. Step 3: Cross multiply
    49,929.10x = 74,857.20 × 20,331.70
  4. Step 4: Simplify right side
    49,929.10x = 1,521,974,133.24
  5. Step 5: Solve for x
    x = 1,521,974,133.24/49,929.10
  6. Step 6: Final answer
    x = 30,482.71

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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.