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Finding the Fourth Proportional to 57,606.66, 86,419.08 and 20,165.82

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Solution

The fourth proportional to 57,606.66, 86,419.08 and 20,165.82 is: 30,251.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,606.66 : 86,419.08 = 20,165.82 : x
  2. Step 2: Convert to fraction form
    57,606.66/86,419.08 = 20,165.82/x
  3. Step 3: Cross multiply
    57,606.66x = 86,419.08 × 20,165.82
  4. Step 4: Simplify right side
    57,606.66x = 1,742,711,611.85
  5. Step 5: Solve for x
    x = 1,742,711,611.85/57,606.66
  6. Step 6: Final answer
    x = 30,251.91

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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.