Home / 49,391.20-74,119.20-28,331.20

Finding the Fourth Proportional to 49,391.20, 74,119.20 and 28,331.20

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Solution

The fourth proportional to 49,391.20, 74,119.20 and 28,331.20 is: 42,515.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,391.20 : 74,119.20 = 28,331.20 : x
  2. Step 2: Convert to fraction form
    49,391.20/74,119.20 = 28,331.20/x
  3. Step 3: Cross multiply
    49,391.20x = 74,119.20 × 28,331.20
  4. Step 4: Simplify right side
    49,391.20x = 2,099,885,879.04
  5. Step 5: Solve for x
    x = 2,099,885,879.04/49,391.20
  6. Step 6: Final answer
    x = 42,515.38

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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.