Home / 49,972.20-74,987.10-18,829.80

Finding the Fourth Proportional to 49,972.20, 74,987.10 and 18,829.80

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Solution

The fourth proportional to 49,972.20, 74,987.10 and 18,829.80 is: 28,255.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,972.20 : 74,987.10 = 18,829.80 : x
  2. Step 2: Convert to fraction form
    49,972.20/74,987.10 = 18,829.80/x
  3. Step 3: Cross multiply
    49,972.20x = 74,987.10 × 18,829.80
  4. Step 4: Simplify right side
    49,972.20x = 1,411,992,095.58
  5. Step 5: Solve for x
    x = 1,411,992,095.58/49,972.20
  6. Step 6: Final answer
    x = 28,255.55

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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.