Home / 49,972.70-74,987.85-18,830.30

Finding the Fourth Proportional to 49,972.70, 74,987.85 and 18,830.30

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Solution

The fourth proportional to 49,972.70, 74,987.85 and 18,830.30 is: 28,256.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,972.70 : 74,987.85 = 18,830.30 : x
  2. Step 2: Convert to fraction form
    49,972.70/74,987.85 = 18,830.30/x
  3. Step 3: Cross multiply
    49,972.70x = 74,987.85 × 18,830.30
  4. Step 4: Simplify right side
    49,972.70x = 1,412,043,711.86
  5. Step 5: Solve for x
    x = 1,412,043,711.86/49,972.70
  6. Step 6: Final answer
    x = 28,256.30

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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.