Home / 49,985.20-74,903.82-21,879.28

Finding the Fourth Proportional to 49,985.20, 74,903.82 and 21,879.28

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Solution

The fourth proportional to 49,985.20, 74,903.82 and 21,879.28 is: 32,786.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,985.20 : 74,903.82 = 21,879.28 : x
  2. Step 2: Convert to fraction form
    49,985.20/74,903.82 = 21,879.28/x
  3. Step 3: Cross multiply
    49,985.20x = 74,903.82 × 21,879.28
  4. Step 4: Simplify right side
    49,985.20x = 1,638,841,650.85
  5. Step 5: Solve for x
    x = 1,638,841,650.85/49,985.20
  6. Step 6: Final answer
    x = 32,786.54

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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.