Home / 53,317.62-79,976.21-21,720.64

Finding the Fourth Proportional to 53,317.62, 79,976.21 and 21,720.64

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Solution

The fourth proportional to 53,317.62, 79,976.21 and 21,720.64 is: 32,580.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,317.62 : 79,976.21 = 21,720.64 : x
  2. Step 2: Convert to fraction form
    53,317.62/79,976.21 = 21,720.64/x
  3. Step 3: Cross multiply
    53,317.62x = 79,976.21 × 21,720.64
  4. Step 4: Simplify right side
    53,317.62x = 1,737,134,238.88
  5. Step 5: Solve for x
    x = 1,737,134,238.88/53,317.62
  6. Step 6: Final answer
    x = 32,580.86

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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.