Home / 74,185.72-111,296.80-21,595.68

Finding the Fourth Proportional to 74,185.72, 111,296.80 and 21,595.68

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Solution

The fourth proportional to 74,185.72, 111,296.80 and 21,595.68 is: 32,398.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,185.72 : 111,296.80 = 21,595.68 : x
  2. Step 2: Convert to fraction form
    74,185.72/111,296.80 = 21,595.68/x
  3. Step 3: Cross multiply
    74,185.72x = 111,296.80 × 21,595.68
  4. Step 4: Simplify right side
    74,185.72x = 2,403,530,077.82
  5. Step 5: Solve for x
    x = 2,403,530,077.82/74,185.72
  6. Step 6: Final answer
    x = 32,398.82

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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.