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Finding the Fourth Proportional to 49,987.48, 74,953.68 and 16,690

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Solution

The fourth proportional to 49,987.48, 74,953.68 and 16,690 is: 25,025.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,987.48 : 74,953.68 = 16,690 : x
  2. Step 2: Convert to fraction form
    49,987.48/74,953.68 = 16,690/x
  3. Step 3: Cross multiply
    49,987.48x = 74,953.68 × 16,690
  4. Step 4: Simplify right side
    49,987.48x = 1,250,976,919.20
  5. Step 5: Solve for x
    x = 1,250,976,919.20/49,987.48
  6. Step 6: Final answer
    x = 25,025.80

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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.