Home / 49,911.50-74,899.36-19,920.60

Finding the Fourth Proportional to 49,911.50, 74,899.36 and 19,920.60

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Solution

The fourth proportional to 49,911.50, 74,899.36 and 19,920.60 is: 29,893.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,911.50 : 74,899.36 = 19,920.60 : x
  2. Step 2: Convert to fraction form
    49,911.50/74,899.36 = 19,920.60/x
  3. Step 3: Cross multiply
    49,911.50x = 74,899.36 × 19,920.60
  4. Step 4: Simplify right side
    49,911.50x = 1,492,040,190.82
  5. Step 5: Solve for x
    x = 1,492,040,190.82/49,911.50
  6. Step 6: Final answer
    x = 29,893.72

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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.