Home / 49,781.55-74,685.69-20,219.94

Finding the Fourth Proportional to 49,781.55, 74,685.69 and 20,219.94

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Solution

The fourth proportional to 49,781.55, 74,685.69 and 20,219.94 is: 30,335.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,781.55 : 74,685.69 = 20,219.94 : x
  2. Step 2: Convert to fraction form
    49,781.55/74,685.69 = 20,219.94/x
  3. Step 3: Cross multiply
    49,781.55x = 74,685.69 × 20,219.94
  4. Step 4: Simplify right side
    49,781.55x = 1,510,140,170.66
  5. Step 5: Solve for x
    x = 1,510,140,170.66/49,781.55
  6. Step 6: Final answer
    x = 30,335.34

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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.