Home / 47,721.72-71,572.86-18,129.18

Finding the Fourth Proportional to 47,721.72, 71,572.86 and 18,129.18

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Solution

The fourth proportional to 47,721.72, 71,572.86 and 18,129.18 is: 27,190.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,721.72 : 71,572.86 = 18,129.18 : x
  2. Step 2: Convert to fraction form
    47,721.72/71,572.86 = 18,129.18/x
  3. Step 3: Cross multiply
    47,721.72x = 71,572.86 × 18,129.18
  4. Step 4: Simplify right side
    47,721.72x = 1,297,557,262.05
  5. Step 5: Solve for x
    x = 1,297,557,262.05/47,721.72
  6. Step 6: Final answer
    x = 27,190.08

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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.