Home / 81,439.92-122,238.72-39,349.62

Finding the Fourth Proportional to 81,439.92, 122,238.72 and 39,349.62

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Solution

The fourth proportional to 81,439.92, 122,238.72 and 39,349.62 is: 59,062.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,439.92 : 122,238.72 = 39,349.62 : x
  2. Step 2: Convert to fraction form
    81,439.92/122,238.72 = 39,349.62/x
  3. Step 3: Cross multiply
    81,439.92x = 122,238.72 × 39,349.62
  4. Step 4: Simplify right side
    81,439.92x = 4,810,047,181.29
  5. Step 5: Solve for x
    x = 4,810,047,181.29/81,439.92
  6. Step 6: Final answer
    x = 59,062.52

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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.