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Finding the Fourth Proportional to 57,337, 86,008.74 and 20,401

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Solution

The fourth proportional to 57,337, 86,008.74 and 20,401 is: 30,602.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,337 : 86,008.74 = 20,401 : x
  2. Step 2: Convert to fraction form
    57,337/86,008.74 = 20,401/x
  3. Step 3: Cross multiply
    57,337x = 86,008.74 × 20,401
  4. Step 4: Simplify right side
    57,337x = 1,754,664,304.74
  5. Step 5: Solve for x
    x = 1,754,664,304.74/57,337
  6. Step 6: Final answer
    x = 30,602.65

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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.