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Finding the Fourth Proportional to 57,655.70, 86,522.57 and 20,216.07

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Solution

The fourth proportional to 57,655.70, 86,522.57 and 20,216.07 is: 30,337.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,655.70 : 86,522.57 = 20,216.07 : x
  2. Step 2: Convert to fraction form
    57,655.70/86,522.57 = 20,216.07/x
  3. Step 3: Cross multiply
    57,655.70x = 86,522.57 × 20,216.07
  4. Step 4: Simplify right side
    57,655.70x = 1,749,146,230.62
  5. Step 5: Solve for x
    x = 1,749,146,230.62/57,655.70
  6. Step 6: Final answer
    x = 30,337.79

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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.