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Finding the Fourth Proportional to 57,604.65, 86,416.07 and 20,163.81

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Solution

The fourth proportional to 57,604.65, 86,416.07 and 20,163.81 is: 30,248.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,604.65 : 86,416.07 = 20,163.81 : x
  2. Step 2: Convert to fraction form
    57,604.65/86,416.07 = 20,163.81/x
  3. Step 3: Cross multiply
    57,604.65x = 86,416.07 × 20,163.81
  4. Step 4: Simplify right side
    57,604.65x = 1,742,477,216.43
  5. Step 5: Solve for x
    x = 1,742,477,216.43/57,604.65
  6. Step 6: Final answer
    x = 30,248.90

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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.