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Finding the Fourth Proportional to 49,404.20, 74,091.90 and 19,812.20

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Solution

The fourth proportional to 49,404.20, 74,091.90 and 19,812.20 is: 29,712.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,404.20 : 74,091.90 = 19,812.20 : x
  2. Step 2: Convert to fraction form
    49,404.20/74,091.90 = 19,812.20/x
  3. Step 3: Cross multiply
    49,404.20x = 74,091.90 × 19,812.20
  4. Step 4: Simplify right side
    49,404.20x = 1,467,923,541.18
  5. Step 5: Solve for x
    x = 1,467,923,541.18/49,404.20
  6. Step 6: Final answer
    x = 29,712.53

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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.