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Finding the Fourth Proportional to 57,869.58, 86,705.16 and 38,858.58

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Solution

The fourth proportional to 57,869.58, 86,705.16 and 38,858.58 is: 58,221.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,869.58 : 86,705.16 = 38,858.58 : x
  2. Step 2: Convert to fraction form
    57,869.58/86,705.16 = 38,858.58/x
  3. Step 3: Cross multiply
    57,869.58x = 86,705.16 × 38,858.58
  4. Step 4: Simplify right side
    57,869.58x = 3,369,239,396.27
  5. Step 5: Solve for x
    x = 3,369,239,396.27/57,869.58
  6. Step 6: Final answer
    x = 58,221.25

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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.