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Finding the Fourth Proportional to 57,673.90, 86,550 and 20,233.66

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Solution

The fourth proportional to 57,673.90, 86,550 and 20,233.66 is: 30,364.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,673.90 : 86,550 = 20,233.66 : x
  2. Step 2: Convert to fraction form
    57,673.90/86,550 = 20,233.66/x
  3. Step 3: Cross multiply
    57,673.90x = 86,550 × 20,233.66
  4. Step 4: Simplify right side
    57,673.90x = 1,751,223,273
  5. Step 5: Solve for x
    x = 1,751,223,273/57,673.90
  6. Step 6: Final answer
    x = 30,364.22

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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.