Home / 57,832.72-86,749.68-20,385.81

Finding the Fourth Proportional to 57,832.72, 86,749.68 and 20,385.81

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Solution

The fourth proportional to 57,832.72, 86,749.68 and 20,385.81 is: 30,578.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,832.72 : 86,749.68 = 20,385.81 : x
  2. Step 2: Convert to fraction form
    57,832.72/86,749.68 = 20,385.81/x
  3. Step 3: Cross multiply
    57,832.72x = 86,749.68 × 20,385.81
  4. Step 4: Simplify right side
    57,832.72x = 1,768,462,494.04
  5. Step 5: Solve for x
    x = 1,768,462,494.04/57,832.72
  6. Step 6: Final answer
    x = 30,578.93

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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.