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Finding the Fourth Proportional to 57,887.74, 86,841.93 and 20,469.53

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Solution

The fourth proportional to 57,887.74, 86,841.93 and 20,469.53 is: 30,707.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,887.74 : 86,841.93 = 20,469.53 : x
  2. Step 2: Convert to fraction form
    57,887.74/86,841.93 = 20,469.53/x
  3. Step 3: Cross multiply
    57,887.74x = 86,841.93 × 20,469.53
  4. Step 4: Simplify right side
    57,887.74x = 1,777,613,491.39
  5. Step 5: Solve for x
    x = 1,777,613,491.39/57,887.74
  6. Step 6: Final answer
    x = 30,707.94

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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.