Home / 57,815.10-86,722.65-38,115.90

Finding the Fourth Proportional to 57,815.10, 86,722.65 and 38,115.90

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Solution

The fourth proportional to 57,815.10, 86,722.65 and 38,115.90 is: 57,173.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,815.10 : 86,722.65 = 38,115.90 : x
  2. Step 2: Convert to fraction form
    57,815.10/86,722.65 = 38,115.90/x
  3. Step 3: Cross multiply
    57,815.10x = 86,722.65 × 38,115.90
  4. Step 4: Simplify right side
    57,815.10x = 3,305,511,855.14
  5. Step 5: Solve for x
    x = 3,305,511,855.14/57,815.10
  6. Step 6: Final answer
    x = 57,173.85

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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.